{"id":5757,"date":"2025-05-17T07:50:46","date_gmt":"2025-05-17T07:50:46","guid":{"rendered":"https:\/\/protech-transfer.com\/%e0%b8%9a%e0%b8%97%e0%b8%84%e0%b8%a7%e0%b8%b2%e0%b8%a1%e0%b8%84%e0%b8%a7%e0%b8%b2%e0%b8%a1%e0%b8%a3%e0%b8%b9%e0%b9%89\/"},"modified":"2025-12-11T04:45:23","modified_gmt":"2025-12-11T04:45:23","slug":"knowledge-articles","status":"publish","type":"page","link":"https:\/\/protech-transfer.com\/th\/knowledge-articles\/","title":{"rendered":"\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e04\u0e27\u0e32\u0e21\u0e23\u0e39\u0e49&#8211;"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"5757\" class=\"elementor elementor-5757 elementor-5656\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3b4773f31 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default exad-glass-effect-no wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no exad-sticky-section-no\" data-id=\"3b4773f31\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-412fc47 exad-glass-effect-no exad-sticky-section-no\" data-id=\"412fc47\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-edb84d9 exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-spacer\" data-id=\"edb84d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8ba404f elementor-align-center elementor-icon-list--layout-traditional elementor-list-item-link-full_width exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-icon-list\" data-id=\"8ba404f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-book\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M448 360V24c0-13.3-10.7-24-24-24H96C43 0 0 43 0 96v320c0 53 43 96 96 96h328c13.3 0 24-10.7 24-24v-16c0-7.5-3.5-14.3-8.9-18.7-4.2-15.4-4.2-59.3 0-74.7 5.4-4.3 8.9-11.1 8.9-18.6zM128 134c0-3.3 2.7-6 6-6h212c3.3 0 6 2.7 6 6v20c0 3.3-2.7 6-6 6H134c-3.3 0-6-2.7-6-6v-20zm0 64c0-3.3 2.7-6 6-6h212c3.3 0 6 2.7 6 6v20c0 3.3-2.7 6-6 6H134c-3.3 0-6-2.7-6-6v-20zm253.4 250H96c-17.7 0-32-14.3-32-32 0-17.6 14.4-32 32-32h285.4c-1.9 17.1-1.9 46.9 0 64z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e04\u0e27\u0e32\u0e21\u0e23\u0e39\u0e49<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-db54054 elementor-section-boxed elementor-section-height-default elementor-section-height-default exad-glass-effect-no wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no exad-sticky-section-no\" data-id=\"db54054\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2dd6ff5 exad-glass-effect-no exad-sticky-section-no\" data-id=\"2dd6ff5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-74edea7 exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-exad-filterable-post\" data-id=\"74edea7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"exad-filterable-post.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\r\n\t\t<div class=\"exad-filterable-items exad-filterable-menu-container-align-top\" id =\"exad-filterable-filterable-id-74edea7\">\r\n\t\t\t\t\t\t<div class=\"exad-filterable-menu-container\">\r\n\t\t\t\t\t\r\n\t\t<ul class=\"exad-filterable-menu\"  >\r\n\t\t\t<li class=\"filter-item current\"  data-filter=\"*\">\r\n\t\t\t\t\u0e17\u0e31\u0e49\u0e07\u0e2b\u0e21\u0e14\t\t\t<\/li>\r\n\t\t\t\t\t\t\t\t<li class=\"filter-item\" data-filter=\".casting-knowledge-articles\">\r\n\t\t\t\t\t\t\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30\t\t\t\t\t<\/li>\r\n\t\t\t\t\t\t\t\t\t<li class=\"filter-item\" data-filter=\".grinding-and-polishing-knowledge-articles\">\r\n\t\t\t\t\t\t\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e40\u0e25\u0e40\u0e0b\u0e2d\u0e23\u0e4c\t\t\t\t\t<\/li>\r\n\t\t\t\t\t\t\t\t\t<li class=\"filter-item\" data-filter=\".laser-knowledge-articles\">\r\n\t\t\t\t\t\t\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e07\u0e32\u0e19\u0e02\u0e31\u0e14\u0e1c\u0e34\u0e27\u0e42\u0e25\u0e2b\u0e30\t\t\t\t\t<\/li>\r\n\t\t\t\t\t\t\t\t\t<li class=\"filter-item\" data-filter=\".other-articles\">\r\n\t\t\t\t\t\t\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e2d\u0e37\u0e48\u0e19\u0e46\t\t\t\t\t<\/li>\r\n\t\t\t\t\t\t\r\n\t\t<\/ul>\r\n\t\r\n    \t\t\t<\/div>\r\n\t\t\t\t\t\t<div class=\"exad-filterable-controls\">\r\n\t\t\t\t<div class=\"filterable-post-container exad-row-wrapper exad-col-3\" id=\"filters-74edea7\">\r\n\t\t\t\t\t\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item not-needed-th casting-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2026\/03\/20\/survey-of-defect-types\/\" >\r\n                    <img fetchpriority=\"high\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"Survey_of_Defect_Types\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/casting-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2026\/03\/20\/survey-of-defect-types\/\" class=\"exad-post-grid-author-date\">\u0e21\u0e35\u0e19\u0e32\u0e04\u0e21 20, 2026<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2026\/03\/20\/survey-of-defect-types\/\" class=\"exad-post-grid-title\">\u0e01\u0e32\u0e23\u0e08\u0e33\u0e41\u0e19\u0e01\u0e1b\u0e23\u0e30\u0e40\u0e20\u0e17\u0e02\u0e2d\u0e07\u0e02\u0e49\u0e2d\u0e1a\u0e01\u0e1e\u0e23\u0e48\u0e2d\u0e07\u0e08\u0e32\u0e01\u0e01\u0e23\u0e30\u0e1a\u0e27\u0e19\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    &nbsp; \u0e02\u0e49\u0e2d\u0e1a\u0e01\u0e1e\u0e23\u0e48...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2026\/03\/20\/survey-of-defect-types\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item optional-th other-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2025\/12\/08\/precious-metal-recovery-from-electro-polishing\/\" >\r\n                    <img decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"Precious Metal Recovery from Electro-Polishing-part-1b\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/other-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e2d\u0e37\u0e48\u0e19\u0e46<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2025\/12\/08\/precious-metal-recovery-from-electro-polishing\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 8, 2025<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2025\/12\/08\/precious-metal-recovery-from-electro-polishing\/\" class=\"exad-post-grid-title\">\u0e01\u0e32\u0e23\u0e01\u0e39\u0e49\u0e04\u0e37\u0e19\u0e42\u0e25\u0e2b\u0e30\u0e21\u0e35\u0e04\u0e48\u0e32\u0e08\u0e32\u0e01\u0e02\u0e2d\u0e07\u0e40\u0e2a\u0e35\u0e22\u0e17\u0e35\u0e48\u0e21\u0e32\u0e08\u0e32\u0e01\u0e01\u0e32\u0e23\u0e02\u0e31\u0e14\u0e1c\u0e34\u0e27\u0e42\u0e25\u0e2b\u0e30\u0e14\u0e49\u0e27\u0e22\u0e44\u0e1f\u0e1f\u0e49\u0e32<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e01\u0e32\u0e23\u0e01\u0e39\u0e49\u0e04\u0e37\u0e19\u0e42\u0e25\u0e2b\u0e30\u0e21\u0e35...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2025\/12\/08\/precious-metal-recovery-from-electro-polishing\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item optional-th grinding-and-polishing-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/laser-welding-pulse-shaping\/\" >\r\n                    <img decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/grinding-and-polishing-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e40\u0e25\u0e40\u0e0b\u0e2d\u0e23\u0e4c<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/laser-welding-pulse-shaping\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 2, 2024<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/laser-welding-pulse-shaping\/\" class=\"exad-post-grid-title\">\u0e01\u0e32\u0e23\u0e40\u0e0a\u0e37\u0e48\u0e2d\u0e21\u0e14\u0e49\u0e27\u0e22\u0e40\u0e25\u0e40\u0e0b\u0e2d\u0e23\u0e4c\u0e41\u0e1a\u0e1a\u0e1e\u0e31\u0e25\u0e2a\u0e4c<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e01\u0e32\u0e23\u0e40\u0e0a\u0e37\u0e48\u0e2d\u0e21\u0e14\u0e49\u0e27\u0e22\u0e40\u0e25...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/laser-welding-pulse-shaping\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item %e0%b8%81%e0%b8%b2%e0%b8%a3%e0%b8%ab%e0%b8%a5%e0%b9%88%e0%b8%ad %e0%b9%80%e0%b8%84%e0%b8%a3%e0%b8%b7%e0%b9%88%e0%b8%ad%e0%b8%87%e0%b8%9b%e0%b8%a3%e0%b8%b0%e0%b8%94%e0%b8%b1%e0%b8%9a casting-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/shrinkage-porosity-in-jewelry-casting\/\" >\r\n                    <img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/casting-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/shrinkage-porosity-in-jewelry-casting\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 2, 2024<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/shrinkage-porosity-in-jewelry-casting\/\" class=\"exad-post-grid-title\">\u0e15\u0e32\u0e21\u0e14\u0e17\u0e35\u0e48\u0e40\u0e01\u0e34\u0e14\u0e08\u0e32\u0e01\u0e01\u0e32\u0e23\u0e2b\u0e14\u0e15\u0e31\u0e27\u0e02\u0e2d\u0e07\u0e42\u0e25\u0e2b\u0e30\u0e43\u0e19\u0e01\u0e23\u0e30\u0e1a\u0e27\u0e19\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e15\u0e32\u0e21\u0e14\u0e17\u0e35\u0e48\u0e40\u0e01\u0e34\u0e14\u0e08\u0e32\u0e01\u0e01...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/shrinkage-porosity-in-jewelry-casting\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item casting-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/hard-and-soft-spots-in-jewelry\/\" >\r\n                    <img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/casting-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/hard-and-soft-spots-in-jewelry\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 2, 2024<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/hard-and-soft-spots-in-jewelry\/\" class=\"exad-post-grid-title\">\u0e01\u0e32\u0e23\u0e40\u0e01\u0e34\u0e14\u0e08\u0e38\u0e14\u0e41\u0e02\u0e47\u0e07\u0e41\u0e25\u0e30\u0e08\u0e38\u0e14\u0e2d\u0e48\u0e2d\u0e19\u0e43\u0e19\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e01\u0e32\u0e23\u0e17\u0e33\u0e04\u0e27\u0e32\u0e21\u0e40\u0e02\u0e49\u0e32\u0e43\u0e08...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/hard-and-soft-spots-in-jewelry\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item casting-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/gas-porosity-in-jewelry-casting\/\" >\r\n                    <img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/casting-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/gas-porosity-in-jewelry-casting\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 2, 2024<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/gas-porosity-in-jewelry-casting\/\" class=\"exad-post-grid-title\">\u0e15\u0e32\u0e21\u0e14\u0e41\u0e1a\u0e1a\u0e1f\u0e2d\u0e07\u0e2d\u0e32\u0e01\u0e32\u0e28\u0e43\u0e19\u0e07\u0e32\u0e19\u0e2b\u0e25\u0e48\u0e2d\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e15\u0e32\u0e21\u0e14\u0e41\u0e1a\u0e1a\u0e1f\u0e2d\u0e07\u0e2d\u0e32\u0e01\u0e32\u0e28...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/gas-porosity-in-jewelry-casting\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item casting-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/form-filling-theory-and-alloy-properties-in-jewelry-casting\/\" >\r\n                    <img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/casting-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                       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\u0e17\u0e24\u0e29\u0e0e\u0e35\u0e41\u0e25\u0e30\u0e04\u0e38\u0e13\u0e2a\u0e21\u0e1a\u0e31\u0e15\u0e34\u0e02\u0e2d\u0e07\u0e42\u0e25\u0e2b\u0e30\u0e1c\u0e2a\u0e21\u0e43\u0e19\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e04\u0e27\u0e32\u0e21\u0e40\u0e02\u0e49\u0e32\u0e43\u0e08\u0e01\u0e32\u0e23\u0e44\u0e2b...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/form-filling-theory-and-alloy-properties-in-jewelry-casting\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item optional laser-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/electro-polishing-for-metal-parts-process-and-key-benefits\/\" >\r\n                    <img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/laser-knowledge-articles\/\">Surface Articles<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/electro-polishing-for-metal-parts-process-and-key-benefits\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 2, 2024<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/electro-polishing-for-metal-parts-process-and-key-benefits\/\" class=\"exad-post-grid-title\">\u0e01\u0e32\u0e23\u0e02\u0e31\u0e14\u0e40\u0e07\u0e32\u0e14\u0e49\u0e27\u0e22\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e42\u0e25\u0e2b\u0e30: \u0e01\u0e23\u0e30\u0e1a\u0e27\u0e19\u0e01\u0e32\u0e23\u0e41\u0e25\u0e30\u0e04\u0e38\u0e13\u0e1b\u0e23\u0e30\u0e42\u0e22\u0e0a\u0e19\u0e4c<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e01\u0e32\u0e23\u0e02\u0e31\u0e14\u0e40\u0e07\u0e32\u0e14\u0e49\u0e27\u0e22\u0e44\u0e1f...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/electro-polishing-for-metal-parts-process-and-key-benefits\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\r\n<article class=\"exad-post-grid-three exad-col  exad-filterable-item casting-knowledge-articles\">\r\n    <div class=\"exad-post-grid-container image-position-top exad-post-grid-equal-height- \">\r\n                    <figure class=\"exad-post-grid-thumbnail\">\r\n                <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/\" >\r\n                    <img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"512\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-768x512.jpg\" class=\"attachment-medium_large size-medium_large wp-post-image\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration.jpg 1080w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>                <\/a>\r\n                \r\n                            <\/figure>\r\n        \t\t\r\n\t\t        <div class=\"exad-post-grid-body\">\r\n                            <ul class=\"exad-post-grid-category cat-posdefault\">\r\n                    <li><a href=\"https:\/\/protech-transfer.com\/th\/casting-knowledge-articles\/\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/a><\/li>                <\/ul>\r\n                                <ul class=\"exad-post-data show-avatar-no\">\r\n                                                                            <li class=\"exad-post-date\">\r\n                                <span>\r\n                                                                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/\" class=\"exad-post-grid-author-date\">\u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 2, 2024<\/a>\r\n                                <\/span>                          \r\n                            <\/li> \r\n                           \r\n                    <\/ul>\r\n                \t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                    <h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\r\n                        <a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/\" class=\"exad-post-grid-title\">\u0e01\u0e32\u0e23\u0e40\u0e1b\u0e25\u0e35\u0e48\u0e22\u0e19\u0e2a\u0e35: \u0e23\u0e2d\u0e22\u0e1d\u0e49\u0e32 (Firestain) \u0e43\u0e19\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a\u0e40\u0e07\u0e34\u0e19<\/a>\r\n\t\t\t\t\r\n\t\t\t\t\t\t\t\t\t\r\n                    <\/h3>\r\n\t\t\t\t\t\r\n\t\t\t\t\t\t\t\t\r\n                                <div class=\"exad-post-grid-description\">\r\n                    \u0e23\u0e2d\u0e22\u0e1d\u0e49\u0e32 (Firesta...                <\/div>\r\n                            <div class=\"exad-post-footer\"><a href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/\" target=\"_blank\" class=\"read-more\">\u0e2d\u0e48\u0e32\u0e19\u0e15\u0e48\u0e2d<\/a><\/div>\r\n            \r\n        <\/div>\r\n        \t\t\r\n\t\t\t\t\r\n    <\/div>\r\n<\/article>\r\n\t\t\t\t<\/div>\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n    \t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da024cf elementor-hidden-desktop elementor-hidden-tablet elementor-hidden-mobile elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-portfolio\" data-id=\"da024cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:10,&quot;sizes&quot;:[]},&quot;columns&quot;:&quot;3&quot;,&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;item_ratio&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0.66,&quot;sizes&quot;:[]},&quot;item_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"portfolio.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-portfolio__filters\">\n\t\t\t<li class=\"elementor-portfolio__filter elementor-active\" tabindex=\"0\" data-filter=\"__all\">All<\/li>\n\t\t\t\t\t\t\t<li class=\"elementor-portfolio__filter\" tabindex=\"0\" data-filter=\"14\">Surface Articles<\/li>\n\t\t\t\t\t\t\t<li class=\"elementor-portfolio__filter\" tabindex=\"0\" data-filter=\"54\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e2d\u0e37\u0e48\u0e19\u0e46<\/li>\n\t\t\t\t\t\t\t<li class=\"elementor-portfolio__filter\" tabindex=\"0\" data-filter=\"27\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e42\u0e25\u0e2b\u0e30<\/li>\n\t\t\t\t\t\t\t<li class=\"elementor-portfolio__filter\" tabindex=\"0\" data-filter=\"30\">\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e40\u0e25\u0e40\u0e0b\u0e2d\u0e23\u0e4c<\/li>\n\t\t\t\t\t<\/ul>\n\t\t\t\t<div class=\"elementor-portfolio elementor-grid elementor-posts-container\" role=\"list\">\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-27 post-7825 post type-post status-publish format-standard has-post-thumbnail hentry category-casting-knowledge-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2026\/03\/20\/survey-of-defect-types\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-300x200.jpg\" class=\"attachment-medium size-medium wp-image-7950\" alt=\"Survey_of_Defect_Types\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2026\/03\/Survey_of_Defect_Types.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e01\u0e32\u0e23\u0e08\u0e33\u0e41\u0e19\u0e01\u0e1b\u0e23\u0e30\u0e40\u0e20\u0e17\u0e02\u0e2d\u0e07\u0e02\u0e49\u0e2d\u0e1a\u0e01\u0e1e\u0e23\u0e48\u0e2d\u0e07\u0e08\u0e32\u0e01\u0e01\u0e23\u0e30\u0e1a\u0e27\u0e19\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-54 post-6496 post type-post status-publish format-standard has-post-thumbnail hentry category-other-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2025\/12\/08\/precious-metal-recovery-from-electro-polishing\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-300x200.jpg\" class=\"attachment-medium size-medium wp-image-6558\" alt=\"Precious Metal Recovery from Electro-Polishing-part-1b\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2025\/12\/Precious-Metal-Recovery-from-Electro-Polishing-part-1b.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e01\u0e32\u0e23\u0e01\u0e39\u0e49\u0e04\u0e37\u0e19\u0e42\u0e25\u0e2b\u0e30\u0e21\u0e35\u0e04\u0e48\u0e32\u0e08\u0e32\u0e01\u0e02\u0e2d\u0e07\u0e40\u0e2a\u0e35\u0e22\u0e17\u0e35\u0e48\u0e21\u0e32\u0e08\u0e32\u0e01\u0e01\u0e32\u0e23\u0e02\u0e31\u0e14\u0e1c\u0e34\u0e27\u0e42\u0e25\u0e2b\u0e30\u0e14\u0e49\u0e27\u0e22\u0e44\u0e1f\u0e1f\u0e49\u0e32\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-30 post-3457 post type-post status-publish format-standard has-post-thumbnail hentry category-grinding-and-polishing-knowledge-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/laser-welding-pulse-shaping\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3385\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Recommended-Laser-Parameters-for-Different-Metals-and-Applications-2.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e01\u0e32\u0e23\u0e40\u0e0a\u0e37\u0e48\u0e2d\u0e21\u0e14\u0e49\u0e27\u0e22\u0e40\u0e25\u0e40\u0e0b\u0e2d\u0e23\u0e4c\u0e41\u0e1a\u0e1a\u0e1e\u0e31\u0e25\u0e2a\u0e4c\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-27 post-3462 post type-post status-publish format-standard has-post-thumbnail hentry category-casting-knowledge-articles tag-28 tag-29\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/shrinkage-porosity-in-jewelry-casting\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3372\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-showing-the-influence-of-feeding-design-on-shrinkage-porosity.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 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src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3373\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-of-ceramic-inclusions-silica-and-alumina-found-in-jewelry.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e01\u0e32\u0e23\u0e40\u0e01\u0e34\u0e14\u0e08\u0e38\u0e14\u0e41\u0e02\u0e47\u0e07\u0e41\u0e25\u0e30\u0e08\u0e38\u0e14\u0e2d\u0e48\u0e2d\u0e19\u0e43\u0e19\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-27 post-3465 post type-post status-publish format-standard has-post-thumbnail hentry category-casting-knowledge-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/gas-porosity-in-jewelry-casting\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3374\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Image-showing-contaminated-scrap-metal-used-in-casting-processes.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e15\u0e32\u0e21\u0e14\u0e41\u0e1a\u0e1a\u0e1f\u0e2d\u0e07\u0e2d\u0e32\u0e01\u0e32\u0e28\u0e43\u0e19\u0e07\u0e32\u0e19\u0e2b\u0e25\u0e48\u0e2d\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-27 post-3468 post type-post status-publish format-standard has-post-thumbnail hentry category-casting-knowledge-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/form-filling-theory-and-alloy-properties-in-jewelry-casting\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3375\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Diagram-illustrating-the-factors-affecting-metal-flow-in-jewelry-casting.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e01\u0e32\u0e23\u0e40\u0e15\u0e34\u0e21\u0e40\u0e15\u0e47\u0e21\u0e0a\u0e34\u0e49\u0e19\u0e07\u0e32\u0e19: \u0e17\u0e24\u0e29\u0e0e\u0e35\u0e41\u0e25\u0e30\u0e04\u0e38\u0e13\u0e2a\u0e21\u0e1a\u0e31\u0e15\u0e34\u0e02\u0e2d\u0e07\u0e42\u0e25\u0e2b\u0e30\u0e1c\u0e2a\u0e21\u0e43\u0e19\u0e01\u0e32\u0e23\u0e2b\u0e25\u0e48\u0e2d\u0e40\u0e04\u0e23\u0e37\u0e48\u0e2d\u0e07\u0e1b\u0e23\u0e30\u0e14\u0e31\u0e1a\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-14 post-3470 post type-post status-publish format-standard has-post-thumbnail hentry category-laser-knowledge-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/electro-polishing-for-metal-parts-process-and-key-benefits\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3376\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Complex-shaped-part-undergoing-electro-polishing-with-minimal-wear.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\t\u0e01\u0e32\u0e23\u0e02\u0e31\u0e14\u0e40\u0e07\u0e32\u0e14\u0e49\u0e27\u0e22\u0e44\u0e1f\u0e1f\u0e49\u0e32\u0e2a\u0e33\u0e2b\u0e23\u0e31\u0e1a\u0e0a\u0e34\u0e49\u0e19\u0e2a\u0e48\u0e27\u0e19\u0e42\u0e25\u0e2b\u0e30: \u0e01\u0e23\u0e30\u0e1a\u0e27\u0e19\u0e01\u0e32\u0e23\u0e41\u0e25\u0e30\u0e04\u0e38\u0e13\u0e1b\u0e23\u0e30\u0e42\u0e22\u0e0a\u0e19\u0e4c\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post elementor-filter-27 post-3461 post type-post status-publish format-standard has-post-thumbnail hentry category-casting-knowledge-articles\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/protech-transfer.com\/th\/2024\/12\/02\/discoloration-the-firestain-problem-in-sterling-silver\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-300x200.jpg\" class=\"attachment-medium size-medium wp-image-3377\" alt=\"\" srcset=\"https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-300x200.jpg 300w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-1024x683.jpg 1024w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration-768x512.jpg 768w, https:\/\/protech-transfer.com\/wp-content\/uploads\/2024\/11\/Close-up-image-of-sterling-silver-jewelry-showing-firestain-discoloration.jpg 1080w\" sizes=\"(max-width: 300px) 100vw, 300px\" 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\u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e40\u0e25\u0e40\u0e0b\u0e2d\u0e23\u0e4c \u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e07\u0e32\u0e19\u0e02\u0e31\u0e14\u0e1c\u0e34\u0e27\u0e42\u0e25\u0e2b\u0e30 \u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e2d\u0e37\u0e48\u0e19\u0e46 \u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e40\u0e01\u0e35\u0e48\u0e22\u0e27\u0e01\u0e31\u0e1a\u0e07\u0e32\u0e19\u0e02\u0e31\u0e14\u0e1c\u0e34\u0e27\u0e42\u0e25\u0e2b\u0e30 \u0e1a\u0e17\u0e04\u0e27\u0e32\u0e21\u0e2d\u0e37\u0e48\u0e19\u0e46 \u0e18\u0e31\u0e19\u0e27\u0e32\u0e04\u0e21 8, 2025 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