{"id":1749,"date":"2026-01-05T15:03:31","date_gmt":"2026-01-05T08:03:31","guid":{"rendered":"https:\/\/dk-metalsurfacetreatment.com\/?p=1749"},"modified":"2026-09-09T15:22:43","modified_gmt":"2026-09-09T08:22:43","slug":"adl-3p-passivation","status":"publish","type":"post","link":"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/","title":{"rendered":"Passivation ADL-3P"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#What_is_Passivation_for_Hot-Dip_Galvanizing_%E2%80%93_ADL-3P\" >What is Passivation for Hot-Dip Galvanizing \u2013 ADL-3P?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#Key_Benefits_Of_ADL-3P\" >Key Benefits Of ADL-3P<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#Specifications\" >Specifications<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#Procedure_for_Using_Passivation_Agent_ADL-3P_for_Hot-Dip_Galvanizing\" >Procedure for Using Passivation Agent ADL-3P for Hot-Dip Galvanizing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#When_Should_You_Choose_ADL-3P\" >When Should You Choose ADL-3P?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#Test_Results\" >Test Results<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#Comparison_of_ADL-3P_Passivation_and_Traditional_Chromate_Chrome_VI\" >Comparison of ADL-3P Passivation and Traditional Chromate (Chrome VI)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/adl-3p-passivation\/#Frequently_Asked_Questions_FAQ\" >Frequently Asked Questions (FAQ)<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_is_Passivation_for_Hot-Dip_Galvanizing_%E2%80%93_ADL-3P\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">What is Passivation for Hot-Dip Galvanizing \u2013 ADL-3P?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"isSelectedEnd\"><strong><span dir=\"auto\">ADL-3P is a\u00a0<\/span><\/strong><strong><span dir=\"auto\">Chromium III (Cr3+) passivation<\/span><\/strong><span dir=\"auto\">\u00a0chemical\u00a0for hot-dip galvanized (HDG) steel, used in\u00a0<\/span><strong><span dir=\"auto\">a separate passivation tank<\/span><\/strong><span dir=\"auto\">\u00a0after the cooling process.<\/span><\/p>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">The product creates a thin transformation film on the zinc surface, reducing\u00a0<\/span><strong><span dir=\"auto\">white rust<\/span><\/strong><span dir=\"auto\">\u00a0, enhancing corrosion resistance, and meeting the trend of replacing\u00a0<\/span><strong><span dir=\"auto\">Chromium VI (Cr6+)<\/span><\/strong><span dir=\"auto\">\u00a0technology with environmentally friendly solutions.<\/span><\/p>\n<p><span dir=\"auto\">Developed by\u00a0<\/span><strong><span dir=\"auto\">AD Chemicals (Netherlands)<\/span><\/strong><span dir=\"auto\">\u00a0, this product is a suitable choice for HDG lines that want to individually control the passivation process to optimize surface quality and corrosion protection.<\/span><\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"Key_Benefits_Of_ADL-3P\"><\/span><span id=\"Loi_Ich_Noi_Bat_Cua_ADL-3P\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Key Benefits Of ADL-3P<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"isSelectedEnd\"><span style=\"color: #253782;\"><strong><span dir=\"auto\">Chromium III (Cr3+) technology, Cr(VI) free.<\/span><\/strong><\/span><\/p>\n<p class=\"isSelectedEnd\"><span style=\"color: #253782;\"><strong><span dir=\"auto\">Used in a separate Passivation tank, the treatment process is easy to control.<\/span><\/strong><\/span><\/p>\n<p class=\"isSelectedEnd\"><span style=\"color: #253782;\"><strong><span dir=\"auto\">Reduce the risk of white rust formation during storage and transportation.<\/span><\/strong><\/span><\/p>\n<p class=\"isSelectedEnd\"><span style=\"color: #253782;\"><strong><span dir=\"auto\">Increase the corrosion resistance of galvanized steel products.<\/span><\/strong><\/span><\/p>\n<p class=\"isSelectedEnd\"><span style=\"color: #253782;\"><strong><span dir=\"auto\">Suitable for production lines requiring separate passivation stages.<\/span><\/strong><\/span><\/p>\n<p class=\"isSelectedEnd\"><span style=\"color: #253782;\"><strong><span dir=\"auto\">The product meets RosH &amp; Reach standards &#8211; supporting businesses in meeting environmental and export requirements.<\/span><\/strong><\/span><\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"Specifications\"><\/span><span id=\"Thong_So_Ky_Thuat\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Specifications<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4385 aligncenter\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/ADL-3p.png\" alt=\"Passivation for hot-dip galvanizing\" width=\"887\" height=\"592\" \/><\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h2 data-start=\"3303\" data-end=\"3738\"><span class=\"ez-toc-section\" id=\"Procedure_for_Using_Passivation_Agent_ADL-3P_for_Hot-Dip_Galvanizing\"><\/span><span id=\"Quy_Trinh_Su_Dung_Chat_Thu_Dong_Hoa_Cho_Ma_Kem_Nhung_Nong_ADL-3P\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Procedure for Using Passivation Agent ADL-3P for Hot-Dip Galvanizing<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1732 size-full\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/Passivation-ADL3P_Cooling_chromefree.png\" sizes=\"auto, (max-width: 1699px) 100vw, 1699px\" srcset=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/Passivation-ADL3P_Cooling_chromefree.png 1699w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/Passivation-ADL3P_Cooling_chromefree-1536x569.png 1536w\" alt=\"Passivation ADL3P Cooling chromefree\" width=\"1699\" height=\"629\" \/><\/p>\n<p><span dir=\"auto\">After the cooling process, the product is transferred to\u00a0<\/span><strong><span dir=\"auto\">a Passivation bath<\/span><\/strong><span dir=\"auto\">\u00a0to create a Chromium III conversion film on the zinc surface. This process improves resistance to white rust and increases the durability of the plating during storage, transportation, and use.<\/span><\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"When_Should_You_Choose_ADL-3P\"><\/span><span id=\"Khi_Nao_Nen_Chon_ADL-3P\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">When Should You Choose ADL-3P?<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">This passivation product for hot-dip galvanizing is a suitable choice for businesses that:<\/span><\/p>\n<ul data-spread=\"false\">\n<li><span style=\"color: #253782;\"><strong><span dir=\"auto\">There is a separate passage tank after the cooling process.<\/span><\/strong><\/span><\/li>\n<li><span style=\"color: #253782;\"><strong><span dir=\"auto\">We want to independently control the passivation process.<\/span><\/strong><\/span><\/li>\n<li><span style=\"color: #253782;\"><strong><span dir=\"auto\">We want to improve the anti-corrosion properties of HDG products.<\/span><\/strong><\/span><\/li>\n<li><span style=\"color: #253782;\"><strong><span dir=\"auto\">We are currently transitioning from Cr(VI) technology to Chromium III (Cr3+).<\/span><\/strong><\/span><\/li>\n<li><span style=\"color: #253782;\"><strong><span dir=\"auto\">Environmental requirements and export standards must be met.<\/span><\/strong><\/span><\/li>\n<\/ul>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"Test_Results\"><\/span><span id=\"Ket_Qua_Thu_Nghiem\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Test Results<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">ADL-3P has been evaluated through standard corrosion resistance tests on hot-dip galvanized steel.<\/span><\/p>\n<p><span dir=\"auto\">Test results show that the Chromium III passivation coating improves resistance to white rust and maintains surface quality under real-world storage, transportation, and usage conditions.<\/span><\/p>\n<h3><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">NSS Results \u2013 Before &amp; Post-Test Comparison<\/span><\/strong><\/span><\/h3>\n<div id=\"gallery-2\" class=\"gallery galleryid-1739 gallery-columns-2 gallery-size-full\">\n<figure class=\"gallery-item\">\n<div class=\"gallery-icon landscape\"><a href=\"https:\/\/dk-metalsurfacetreatment.com\/thu-dong-hoa-cho-ma-kem-nhung-nong\/ket-qua-thu-nghiem-do-am\/#main\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-full size-full\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/Ket-qua-thu-nghiem-do-am.png\" alt=\"Humidity test results\" width=\"1223\" height=\"929\" \/><\/a><\/div>\n<\/figure>\n<figure class=\"gallery-item\">\n<div class=\"gallery-icon landscape\"><a href=\"https:\/\/dk-metalsurfacetreatment.com\/thu-dong-hoa-cho-ma-kem-nhung-nong\/ket-qua-nss-affter\/#main\"><img loading=\"lazy\" decoding=\"async\" class=\"attachment-full size-full\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/Ket-qua-NSS-AFFTER.png\" alt=\"NSS AFFTER results\" width=\"1232\" height=\"912\" \/><\/a><\/div>\n<\/figure>\n<\/div>\n<h3><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Humidity test results (24 hours)<\/span><\/strong><\/span><\/h3>\n<p><span dir=\"auto\">The 24-hour humidity test results demonstrated that the passivation layer performed stably, maintaining a bright and clean surface without any signs of premature oxidation.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4393 size-full\" title=\"Passivation test results for hot-dip galvanizing\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/Passivation_ADL3p_cooling_bath-1030x561-1.png\" alt=\"Passivation test results for hot-dip galvanizing\" width=\"749\" height=\"565\" \/><\/p>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"Comparison_of_ADL-3P_Passivation_and_Traditional_Chromate_Chrome_VI\"><\/span><span id=\"So_Sanh_Passivation_ADL-3P_va_Cromat_Truyen_Thong_Chrome_VI\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Comparison of ADL-3P Passivation and Traditional Chromate (Chrome VI)<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h1><strong><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4387\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/01\/ADL-3P-2.png\" alt=\"ADL-3P\" width=\"848\" height=\"566\" \/><\/strong><\/h1>\n<h3><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Products and articles related to passivation for hot-dip galvanizing.<\/span><\/strong><\/span><\/h3>\n<ul>\n<li><span style=\"color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/xu-ly-be-mat-hdg-truoc-khi-son\/\"><strong><span dir=\"auto\">Additives for hot-dip galvanizing<\/span><\/strong><\/a><\/span><\/li>\n<li><span style=\"color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/xu-ly-be-mat-truoc-pretreatment\/\"><strong><span dir=\"auto\">Surface preparation before painting<\/span><\/strong><\/a><\/span><\/li>\n<\/ul>\n<h3><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Products and articles related to metal surface chemicals.<\/span><\/strong><\/span><\/h3>\n<ul>\n<li><span style=\"color: #253782;\"><strong><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-thu-dong\/\" target=\"_blank\" rel=\"noopener\"><span dir=\"auto\">Passivation chemicals<\/span><\/a><\/strong><\/span><\/li>\n<li><span style=\"color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-tien-xu-ly-truoc-khi-son\/\" target=\"_blank\" rel=\"noopener\"><strong><span dir=\"auto\">Pre-treatment chemicals before painting<\/span><\/strong><\/a><\/span><\/li>\n<li><span style=\"color: #253782;\"><strong><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-toc-antifinger-cho-nganh-ton\/\" target=\"_blank\" rel=\"noopener\"><span dir=\"auto\">TOC \u2013 Anti-Finger for roofing sheets<\/span><\/a><\/strong><\/span><\/li>\n<li><span style=\"color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/tay-dau-etching\/\" target=\"_blank\" rel=\"noopener\"><strong><span dir=\"auto\">Degreasing and Etching<\/span><\/strong><\/a><\/span><\/li>\n<li><span style=\"color: #253782;\"><strong><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-uc-che-an-mon-acid\/\" target=\"_blank\" rel=\"noopener\"><span dir=\"auto\">Acid corrosion inhibitor chemicals<\/span><\/a><\/strong><\/span><\/li>\n<\/ul>\n<hr \/>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQ\"><\/span><span id=\"Cau_Hoi_Thuong_Gap_FAQ\" class=\"ez-toc-section\"><\/span><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">Frequently Asked Questions (FAQ)<\/span><\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span dir=\"auto\" style=\"font-size: 90%;\">In which process is the ADL-3P used?<\/span><\/h3>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">The passivation chemical for hot-dip galvanizing is used in\u00a0<\/span><strong><span dir=\"auto\">a separate Passivation Bath<\/span><\/strong><span dir=\"auto\">\u00a0after the cooling stage to create a Chromium III passivation film on the galvanized steel surface.<\/span><\/p>\n<h3><span dir=\"auto\" style=\"font-size: 90%;\">Can ADL-3P replace Cr(VI) technology?<\/span><\/h3>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">Yes. ADL-3P uses Chromium III (Cr3+) technology and was developed to replace passivation systems for hot-dip galvanizing using Chromium VI (Cr6+) technology.<\/span><\/p>\n<h3><span style=\"font-size: 90%;\"><span dir=\"auto\">Does ADL-3P help reduce white rust?\u00a0<\/span><span dir=\"auto\">Passivation for hot-dip galvanizing.<\/span><\/span><\/h3>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">Yes. This product creates a conversion film that helps limit the appearance of white rust during storage, transportation, and use. Its effectiveness depends on the quality of the coating and the operating conditions of the production line.<\/span><\/p>\n<h3><span style=\"font-size: 90%;\"><span dir=\"auto\">What is the difference between ADL-3P and ADL-32?\u00a0<\/span><span dir=\"auto\">Passivation for hot-dip galvanizing.<\/span><\/span><\/h3>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">This product is used in\u00a0<\/span><strong><span dir=\"auto\">a separate passivation tank<\/span><\/strong><span dir=\"auto\">\u00a0, suitable for production lines that want to individually control the passivation process.<\/span><\/p>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">Meanwhile, ADL-32 is used directly in\u00a0<\/span><strong><span dir=\"auto\">the Quench Tank<\/span><\/strong><span dir=\"auto\">\u00a0, combining cooling and passivation in a single process.<\/span><\/p>\n<h3><span dir=\"auto\" style=\"font-size: 90%;\">Does ADL-3P comply with current environmental standards?<\/span><\/h3>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">Yes. This product does not contain Chromium VI and does not contain SVHC, aligning with environmentally friendly production trends and the requirements of many export markets.<\/span><\/p>\n<div contenteditable=\"false\">\n<hr \/>\n<\/div>\n<h3 data-section-id=\"17xuzf\" data-start=\"7246\" data-end=\"7322\"><span style=\"font-size: 90%;\"><strong><span dir=\"auto\">DK-Chemicals: Metal surface pretreatment solutions for industry<\/span><\/strong><\/span><\/h3>\n<p data-start=\"7324\" data-end=\"7488\"><span dir=\"auto\">DK-Chemicals provides chemical surface treatment solutions for metals serving the aluminum, galvanized sheet, color-coated steel, coil-coating, and related industrial applications.<\/span><\/p>\n<p data-start=\"7490\" data-end=\"7761\"><span dir=\"auto\">With a focus on providing advanced, environmentally friendly technologies that meet modern production requirements, DK-Chemicals partners with customers in selecting suitable pre-treatment solutions, optimizing surface quality, and enhancing product durability after coating.<\/span><\/p>\n<p class=\"isSelectedEnd\"><span dir=\"auto\">Contact DK Chemicals&#8217; technical team today for detailed advice\u00a0 \u00a0\u00a0<\/span><a href=\"https:\/\/dk-chemicals.vn\/san-pham\/primecoat-a109\/\" target=\"_blank\" rel=\"noopener\"><span dir=\"auto\">.<\/span><\/a><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2636 alignleft\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-300x300.png\" alt=\"DK Chemical Company Limited\" width=\"177\" height=\"177\" srcset=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-300x300.png 300w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-150x150.png 150w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1-768x768.png 768w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/05\/logo-new-1.png 1024w\" sizes=\"auto, (max-width: 177px) 100vw, 177px\" \/><\/p>\n<h3><span style=\"color: #253782; font-size: 90%;\"><strong><span dir=\"auto\" style=\"vertical-align: inherit;\">DK Chemical Company Limited<\/span><\/strong><\/span><\/h3>\n<p><span style=\"color: #253782;\"><strong><span dir=\"auto\" style=\"vertical-align: inherit;\">Address:<\/span><\/strong><span dir=\"auto\" style=\"vertical-align: inherit;\"> 50 Street No. 12, Cityland Park Hills Residential Area, Go Vap Ward, Ho Chi Minh City<\/span><\/span><\/p>\n<p><span style=\"color: #253782;\"><strong><span dir=\"auto\" style=\"vertical-align: inherit;\">Hotline: <\/span><\/strong>\u00a0<a style=\"color: #253782;\" href=\"tel:0909678599\"><span dir=\"auto\" style=\"vertical-align: inherit;\">0909678599<\/span><\/a><\/span><\/p>\n<p><span style=\"color: #253782;\"><strong><span dir=\"auto\" style=\"vertical-align: inherit;\">Email: <\/span><\/strong>\u00a0<a style=\"color: #253782;\" href=\"mailto:de@dk-chemicals.vn\"><span dir=\"auto\" style=\"vertical-align: inherit;\">de@dk-chemicals.vn<\/span><\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What is Passivation for Hot-Dip Galvanizing \u2013 ADL-3P? ADL-3P is a\u00a0Chromium III (Cr3+) passivation\u00a0chemical\u00a0for hot-dip galvanized (HDG) steel, used in\u00a0a separate passivation tank\u00a0after the cooling process. The product creates a thin transformation film on the zinc surface, reducing\u00a0white rust\u00a0, enhancing corrosion resistance, and meeting the trend of replacing\u00a0Chromium VI (Cr6+)\u00a0technology with environmentally friendly solutions. Developed<\/p>\n","protected":false},"author":3,"featured_media":4386,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,45],"tags":[],"class_list":["post-1749","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-passivation-hdg"],"_links":{"self":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1749","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/comments?post=1749"}],"version-history":[{"count":6,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1749\/revisions"}],"predecessor-version":[{"id":3240,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1749\/revisions\/3240"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media\/4386"}],"wp:attachment":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media?parent=1749"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/categories?post=1749"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/tags?post=1749"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}