{"id":4719,"date":"2026-07-06T16:37:30","date_gmt":"2026-07-06T09:37:30","guid":{"rendered":"https:\/\/dk-metalsurfacetreatment.com\/?p=4719"},"modified":"2026-10-27T16:40:05","modified_gmt":"2026-10-27T09:40:05","slug":"surface-pretreatment-determine","status":"publish","type":"post","link":"https:\/\/dk-metalsurfacetreatment.com\/en\/surface-pretreatment-determine\/","title":{"rendered":"Why does surface pretreatment determine adhesion and paint life?"},"content":{"rendered":"<p data-rm-block-id=\"block-1\">In manufacturing industries such as mechanical, automotive, household appliances, steel structures or coil coating, the quality of the paint not only depends on the type of paint or spray painting technology but is also directly affected by <strong>the pretreatment of the surface<\/strong>.<\/p>\n<p data-rm-block-id=\"block-1\">\n<p data-rm-block-id=\"block-3\">In fact, many businesses invest in modern paint systems, use high-quality paints or powders, but still encounter errors such as:<\/p>\n<ul>\n<li data-rm-block-id=\"block-4\"><span style=\"font-size: 100%;\"><strong>The paint peels off after only a short period of use.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-5\"><span style=\"font-size: 100%;\"><strong>Rust appears under the paint.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-6\"><span style=\"font-size: 100%;\"><strong>The coating is uneven, easy to blister.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-7\"><span style=\"font-size: 100%;\"><strong>\u00a0Unsatisfactory adhesion after bending, stamping or machining.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-8\">The most common cause is not the paint, but\u00a0 the <strong>metal surface that has not been properly treated before painting<\/strong>. This is the stage that determines the ability to bond between the coating and the metal substrate, and directly affects the corrosion resistance and life of the product.<\/p>\n<p data-rm-block-id=\"block-9\">In this article, let&#8217;s find out <strong>what surface pretreatment is<\/strong>, why it is considered the &#8220;foundation&#8221; of the entire industrial coating system and the standard metal surface treatment process today.<\/p>\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\/surface-pretreatment-determine\/#What_is_Surface_Pretreatment\" >What is Surface Pretreatment?<\/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\/surface-pretreatment-determine\/#Why_does_surface_pretreatment_determine_adhesion_and_paint_life\" >Why does surface pretreatment determine adhesion and paint life?<\/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\/surface-pretreatment-determine\/#Standard_Metal_Surface_Treatment_Procedures\" >Standard Metal Surface Treatment Procedures<\/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\/surface-pretreatment-determine\/#What_are_PrimeCoat%C2%AE_Pretreatments\" >What are PrimeCoat\u00ae Pretreatments?<\/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\/surface-pretreatment-determine\/#The_Role_of_Metal_Pretreatment_Chemicals_in_Paint_Lines\" >The Role of Metal Pretreatment Chemicals in Paint Lines<\/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\/surface-pretreatment-determine\/#The_Trend_of_Transition_to_Non-Chromium_VI_Pretreatment_Technology\" >The Trend of Transition to Non-Chromium VI Pretreatment Technology<\/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\/surface-pretreatment-determine\/#PrimeCoat%C2%AE_Pretreatments\" >PrimeCoat\u00ae Pretreatments<\/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\/surface-pretreatment-determine\/#DK_Chemicals_%E2%80%93_Metal_Pretreatment_Solution_Provider\" >D.K Chemicals \u2013 Metal Pretreatment Solution Provider<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/surface-pretreatment-determine\/#Frequently_Asked_Questions_FAQ\" >Frequently Asked Questions (FAQ)<\/a><\/li><\/ul><\/nav><\/div>\n<h2 data-rm-block-id=\"block-10\"><span class=\"ez-toc-section\" id=\"What_is_Surface_Pretreatment\"><\/span><span style=\"font-size: 90%;\"><strong>What is Surface Pretreatment?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-rm-block-id=\"block-11\"><strong>Surface pretreatment<\/strong> is a set of mechanical and chemical steps to prepare a metal surface before taking the next steps such as coating, electroplating, metabolic coating or gluing.<\/p>\n<p data-rm-block-id=\"block-12\">The objectives of this process include:<\/p>\n<ul>\n<li data-rm-block-id=\"block-13\"><span style=\"font-size: 100%;\"><strong>Completely removes grease, dirt, and impurities.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-14\"><span style=\"font-size: 100%;\"><strong>Remove the oxide and rust layer from the surface.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-15\"><span style=\"font-size: 100%;\"><strong>Creating a chemical metabolic layer helps increase adhesion.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-16\"><span style=\"font-size: 100%;\"><strong>Enhanced corrosion resistance.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-17\"><span style=\"font-size: 100%;\"><strong>Uniform surface quality before painting.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-18\">It can be imagined that if the paint is a &#8220;house&#8221;,\u00a0 the <strong>surface pretreatment is the foundation<\/strong>. A substandard foundation will cause the entire paint system to deteriorate quickly, no matter how high the quality of paint used.<\/p>\n<p data-rm-block-id=\"block-19\">According to experience in the metal surface treatment industry, the pretreatment stage can determine about <strong>70% of the quality of the finish, <\/strong>because this is the step that facilitates the coating to bond sustainably with the metal substrate.<\/p>\n<h2 data-rm-block-id=\"block-20\"><span class=\"ez-toc-section\" id=\"Why_does_surface_pretreatment_determine_adhesion_and_paint_life\"><\/span><span style=\"font-size: 90%;\"><strong>Why does surface pretreatment determine adhesion and paint life?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3 data-rm-block-id=\"block-21\"><span style=\"font-size: 90%;\"><strong>1. The paint does not adhere directly to the metal<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-22\">Many people think that the paint adheres directly to steel or aluminum. In fact, the adhesion of paint depends on many factors such as:<\/p>\n<ul>\n<li data-rm-block-id=\"block-23\"><strong>Cleanliness of the surface.<\/strong><\/li>\n<li data-rm-block-id=\"block-24\"><strong>Micro roughness.<\/strong><\/li>\n<li data-rm-block-id=\"block-25\"><strong>Chemical metabolism layer (Phosphate, Zirconium, Nano Ceramic&#8230;).<\/strong><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-26\">If the surface remains:<\/p>\n<ul>\n<li data-rm-block-id=\"block-27\"><strong>Machining Oils<\/strong><\/li>\n<li data-rm-block-id=\"block-28\"><strong>Fingerprint<\/strong><\/li>\n<li data-rm-block-id=\"block-29\"><strong>Metal Oxides<\/strong><\/li>\n<li data-rm-block-id=\"block-30\"><strong>Dirt<\/strong><\/li>\n<li data-rm-block-id=\"block-31\"><strong>Solder Residue<\/strong><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-32\">the paint only adheres to the impurity layer instead of directly adhering to the metal. When the impurity layer peels off, the paint will also peel off.<\/p>\n<h3 data-rm-block-id=\"block-33\"><span style=\"font-size: 90%;\"><strong>2. Increased adhesion between paint and metal<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-34\">After being properly processed, the metal surface will form a chemical metabolic layer.<\/p>\n<p data-rm-block-id=\"block-35\">This layer has the effect of:<\/p>\n<ul>\n<li data-rm-block-id=\"block-36\"><span style=\"font-size: 100%;\"><strong>increased contact area between metal and paint;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-37\"><span style=\"font-size: 100%;\"><strong>creating sustainable chemical bonds;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-38\"><span style=\"font-size: 100%;\"><strong>improve impact resistance;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-39\"><span style=\"font-size: 100%;\"><strong>Limit peeling when bending or stamping.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-40\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4720 size-full\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/son-bong-troc-1.png\" alt=\"surface pretreatment\" width=\"1142\" height=\"291\" \/><\/p>\n<p style=\"text-align: center;\" data-rm-block-id=\"block-41\"><span style=\"font-size: 80%;\"><em>For products that have to undergo a forming process after painting such as corrugated iron, automotive components, or household electrical appliances, this is a particularly important factor.<\/em><\/span><\/p>\n<h3 data-rm-block-id=\"block-42\"><span style=\"font-size: 90%;\"><strong>3. Prevents corrosion right underneath the paint<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-43\">One of the reasons why the paint peels off is not due to external influences but <strong>corrosion under the paint film.<\/strong><\/p>\n<p data-rm-block-id=\"block-44\">When moisture or salt enters areas with impurities or untreated surfaces, the corrosion process starts in the metal substrate and spreads.<\/p>\n<p data-rm-block-id=\"block-45\">As a result:<\/p>\n<ul>\n<li data-rm-block-id=\"block-46\"><span style=\"font-size: 100%;\"><strong>Blistered paint.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-47\"><span style=\"font-size: 100%;\"><strong>Peeling off in patches.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-48\"><span style=\"font-size: 100%;\"><strong>Rust appears at the cutting edge.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-49\"><span style=\"font-size: 100%;\"><strong>Corrosion at the weld.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-50\"><span style=\"font-size: 100%;\"><strong>Reduce product life.<\/strong><\/span><\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4722\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/ri-set-thep-cuon-2.jpeg\" alt=\"surface pretreatment\" width=\"818\" height=\"613\" \/><\/p>\n<h6 style=\"text-align: center;\" data-rm-block-id=\"block-51\"><span style=\"font-size: 90%;\"><em>A good pretreatment system will create an initial layer of protection, slow down the corrosion process and significantly increase the durability of the coating.<\/em><\/span><\/h6>\n<h3 data-rm-block-id=\"block-52\"><span style=\"font-size: 90%;\"><strong>4. Increased resistance in harsh environments<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-53\">Metal products are often subject to work in the following environments:<\/p>\n<ul>\n<li data-rm-block-id=\"block-54\"><span style=\"font-size: 100%;\"><strong>High humidity.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-55\"><span style=\"font-size: 100%;\"><strong>Coastal.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-56\"><span style=\"font-size: 100%;\"><strong>Acid rain.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-57\"><span style=\"font-size: 100%;\"><strong>UV rays.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-58\"><span style=\"font-size: 100%;\"><strong>Industrial chemicals.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-59\">If the paint is not supported by a proper pretreatment system, water and oxygen will quickly enter the metal substrate, causing rust and destroying the coating.<\/p>\n<p data-rm-block-id=\"block-60\">Conversely, when the surface is properly treated, corrosion resistance and outdoor durability are significantly improved.<\/p>\n<h3 data-rm-block-id=\"block-61\"><span style=\"font-size: 90%;\"><strong>5. Reduce the defect rate in production<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-62\">For mass production lines, just one part with poor paint adhesion can also lead to:<\/p>\n<ul>\n<li data-rm-block-id=\"block-63\"><span style=\"font-size: 100%;\"><strong>increased repair costs;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-64\"><span style=\"font-size: 100%;\"><strong>the entire shipment must be repainted;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-65\"><span style=\"font-size: 100%;\"><strong>delay in delivery;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-66\"><span style=\"font-size: 100%;\"><strong>affecting the reputation with customers.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-67\">Therefore, in industrial paint standards such as ISO and ASTM, <strong>surface pretreatment is not an option<\/strong>, but a mandatory stage to ensure product quality.<\/p>\n<h2 data-rm-block-id=\"block-68\"><span class=\"ez-toc-section\" id=\"Standard_Metal_Surface_Treatment_Procedures\"><\/span><span style=\"font-size: 90%;\"><strong>Standard Metal Surface Treatment Procedures<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-rm-block-id=\"block-69\">Depending on the type of metal and technical requirements, the processing process may vary. However, most modern lines consist of two main groups of stages: <strong>mechanical processing<\/strong> and <strong>chemical processing<\/strong>.<\/p>\n<h3 data-rm-block-id=\"block-70\"><span style=\"font-size: 90%;\"><strong>Step 1. Mechanical Processing<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-71\">This is the first step to eliminate mechanical defects on the surface and prepare the metal substrate for the next stage.<\/p>\n<p data-rm-block-id=\"block-72\">Common methods include:<\/p>\n<ul>\n<li data-rm-block-id=\"block-73\"><span style=\"font-size: 100%;\"><strong>Grinding.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-74\"><span style=\"font-size: 100%;\"><strong>Polishing.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-75\"><span style=\"font-size: 100%;\"><strong>Spinning the barrel.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-76\"><span style=\"font-size: 100%;\"><strong>Shot blasting.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-77\"><span style=\"font-size: 100%;\"><strong>Sandblasting.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-78\"><strong>Purpose:<\/strong><\/p>\n<ul>\n<li data-rm-block-id=\"block-79\"><span style=\"font-size: 100%;\"><strong>Removes rust and oxides.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-80\"><span style=\"font-size: 100%;\"><strong>Remove post-machining bavia.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-81\"><span style=\"font-size: 100%;\"><strong>Increase the uniformity of the surface.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-82\"><span style=\"font-size: 100%;\"><strong>Creates the right roughness to increase adhesion.<\/strong><\/span><\/li>\n<\/ul>\n<h3 data-rm-block-id=\"block-83\"><span style=\"font-size: 90%;\"><strong>Step 2. Oil Removal<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-84\">During mechanical processing, metals often adhere to cutting oils, preservative oils, or greases.<\/p>\n<p data-rm-block-id=\"block-85\">If not removed completely, these substances will interfere with the bond between the paint and the metal substrate.<\/p>\n<p data-rm-block-id=\"block-86\">Typically, the deoiling process is carried out with a chemical solution combined with heating to improve the cleaning efficiency.<\/p>\n<h3 data-rm-block-id=\"block-87\"><span style=\"font-size: 90%;\"><strong>Step 3. Rust removal and oxide removal<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-88\">Metals after storage or transportation often appear a natural oxide layer.<\/p>\n<p data-rm-block-id=\"block-89\">At this stage, the surface is treated with an acidic solution with an appropriate concentration to:<\/p>\n<ul>\n<li data-rm-block-id=\"block-90\"><span style=\"font-size: 100%;\"><strong>complete removal of the oxide layer;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-91\"><span style=\"font-size: 100%;\"><strong>cleaning metal substrates;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-92\"><span style=\"font-size: 100%;\"><strong>preparing for the process of creating a metabolic layer.<\/strong><\/span><\/li>\n<\/ul>\n<h3 data-rm-block-id=\"block-93\"><span style=\"font-size: 90%;\"><strong>Step 4. Ultrasonic or electrochemical oil removal (as needed)<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-94\">For parts with complex shapes or very high cleanliness requirements, businesses can apply:<\/p>\n<ul>\n<li data-rm-block-id=\"block-95\"><span style=\"font-size: 100%;\"><strong>Ultrasonic Oil Removal: helps to clean crevices, small holes, and hard-to-reach surfaces.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-96\"><span style=\"font-size: 100%;\"><strong>Electrochemical oil removal: completely removes the residual grease, creating an optimal clean surface for the next stages.<\/strong><\/span><\/li>\n<\/ul>\n<h3><span style=\"font-size: 90%;\"><strong>Step 5. Chemical Metabolism Layer Formation<\/strong><\/span><\/h3>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-4725\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/3-3-scaled.png\" alt=\"surface pretreatment\" width=\"1004\" height=\"548\" srcset=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/3-3-scaled.png 2560w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/3-3-1536x838.png 1536w, https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/3-3-2048x1117.png 2048w\" sizes=\"auto, (max-width: 1004px) 100vw, 1004px\" \/><\/p>\n<h6 style=\"text-align: center;\" data-rm-block-id=\"block-98\"><span style=\"font-size: 100%;\"><em>This is the <strong>most important step<\/strong> in the entire pretreatment process.<\/em><\/span><\/h6>\n<p data-rm-block-id=\"block-99\">Popular technologies today include:<\/p>\n<ul>\n<li>\n<p data-rm-block-id=\"block-100\"><span style=\"font-size: 100%; color: #282828;\"><a style=\"color: #282828;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/phot-phat-hoa-phosphate-06h\/\"><strong>Phosphate h\u00f3a.<\/strong><\/a><\/span><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-101\"><span style=\"font-size: 100%; color: #282828;\"><strong>Nano Ceramic.<\/strong><\/span><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-102\"><span style=\"font-size: 100%; color: #282828;\"><a style=\"color: #282828;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-tien-xu-ly-truoc-khi-son\/tang-bam-dinh-chrome-3\/\" target=\"_blank\" rel=\"noopener\"><strong>Chrome III.<\/strong><\/a><\/span><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-103\"><span style=\"font-size: 100%; color: #282828;\"><a style=\"color: #282828;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/hoa-chat-tien-xu-ly-truoc-khi-son\/tang-bam-dinh-chrome-free-non-cr\/\" target=\"_blank\" rel=\"noopener\"><strong>Chrome-Free Conversion Coating.<\/strong><\/a><\/span><\/p>\n<\/li>\n<\/ul>\n<p data-rm-block-id=\"block-104\">The metabolic layer helps:<\/p>\n<ul>\n<li data-rm-block-id=\"block-105\"><span style=\"font-size: 100%;\"><strong>increased paint adhesion;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-106\"><span style=\"font-size: 100%;\"><strong>improve corrosion resistance;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-107\"><span style=\"font-size: 100%;\"><strong>improve outdoor durability;<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-108\"><span style=\"font-size: 100%;\"><strong>prolong the life of the product.<\/strong><\/span><\/li>\n<\/ul>\n<h2 data-rm-block-id=\"block-109\"><span class=\"ez-toc-section\" id=\"What_are_PrimeCoat%C2%AE_Pretreatments\"><\/span><span style=\"font-size: 90%;\"><strong>What are PrimeCoat\u00ae Pretreatments?<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-rm-block-id=\"block-110\">In the <strong>Coil Coating industry <\/strong>\u00a0and industrial paint lines, the quality of the coating depends not only on the type of paint but also directly affected by\u00a0 the <strong>chemical system of metal pretreatment<\/strong>.<\/p>\n<p data-rm-block-id=\"block-111\">PrimeCoat\u00ae Pretreatments is a line\u00a0 of <strong>high-performance pretreatment chemicals<\/strong> developed\u00a0 by <strong>AD CCT \u2013 a member of AD International<\/strong>, specializing in providing metal surface treatment solutions to many roll sheet manufacturers around the world. This series is designed to meet the stringent requirements for paint adhesion, corrosion resistance, and outdoor durability.<\/p>\n<p data-rm-block-id=\"block-112\">Not only does PrimeCoat\u00ae help clean surfaces, but it also creates a stable chemical metabolism layer, which helps the paint layer bond closely with the metal substrate, thereby improving product quality and extending service life.<\/p>\n<h2 data-rm-block-id=\"block-113\"><span class=\"ez-toc-section\" id=\"The_Role_of_Metal_Pretreatment_Chemicals_in_Paint_Lines\"><\/span><span style=\"font-size: 90%;\"><strong>The Role of Metal Pretreatment Chemicals in Paint Lines<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-rm-block-id=\"block-114\">In modern manufacturing, users always expect metal products to have:<\/p>\n<ul>\n<li data-rm-block-id=\"block-115\"><span style=\"font-size: 100%;\"><strong>Long service life.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-116\"><span style=\"font-size: 100%;\"><strong>Durable paint color.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-117\"><span style=\"font-size: 100%;\"><strong>High corrosion resistance.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-118\"><span style=\"font-size: 100%;\"><strong>Good adhesion after machining.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-119\"><span style=\"font-size: 100%;\"><strong>Ability to withstand harsh environments.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-120\">To meet these requirements, the pretreatment chemical system acts as the &#8220;bond&#8221; layer between the metal substrate and the paint layer.<\/p>\n<p data-rm-block-id=\"block-121\">A suitable pretreatment system will help:<\/p>\n<p data-rm-block-id=\"block-122\"><span style=\"font-size: 100%;\"><strong>&#x2714; Increase the adhesion of the paint.<\/strong><\/span><\/p>\n<p data-rm-block-id=\"block-123\"><span style=\"font-size: 100%;\"><strong>&#x2714; Increased corrosion resistance.<\/strong><\/span><\/p>\n<p data-rm-block-id=\"block-124\"><span style=\"font-size: 100%;\"><strong>&#x2714; Reduces the risk of peeling after bending, stamping or forming.<\/strong><\/span><\/p>\n<p data-rm-block-id=\"block-125\"><span style=\"font-size: 100%;\"><strong>&#x2714; Limit corrosion under the paint film.<\/strong><\/span><\/p>\n<p data-rm-block-id=\"block-126\"><span style=\"font-size: 100%;\"><strong>&#x2714; Increase product life.<\/strong><\/span><\/p>\n<p data-rm-block-id=\"block-127\"><span style=\"font-size: 100%;\"><strong>&#x2714; Enhanced durability when used outdoors.<\/strong><\/span><\/p>\n<p data-rm-block-id=\"block-128\">On the contrary, if the pretreatment stage is ignored or improperly performed, the paint is very easy to peel, blister or appear rust prematurely, directly affecting the quality and value of the product.<\/p>\n<h2 data-rm-block-id=\"block-129\"><span class=\"ez-toc-section\" id=\"The_Trend_of_Transition_to_Non-Chromium_VI_Pretreatment_Technology\"><\/span><span style=\"font-size: 90%;\"><strong>The Trend of Transition to Non-Chromium VI Pretreatment Technology<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-rm-block-id=\"block-130\">For many years, <strong>hexavalent Chromium-containing (Cr\u2076<\/strong><strong>\u207a) chemical systems <\/strong>\u00a0have been popularly used due to their effective corrosion resistance. However, this is a chemical that is subject to strict control due to its effects on human health and the environment.<\/p>\n<p data-rm-block-id=\"block-131\">The current trend is to switch to <strong>Chrome-Free<\/strong> or <strong>Chromium III (Cr\u00b3<\/strong><strong>\u207a) technologies <\/strong>\u00a0to meet international standards such as:<\/p>\n<ul>\n<li data-rm-block-id=\"block-132\"><span style=\"font-size: 100%;\"><strong>RoHS<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-133\"><span style=\"font-size: 100%;\"><strong>REACH<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-134\"><span style=\"font-size: 100%;\"><strong>ELV<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-135\"><span style=\"font-size: 100%;\"><strong>Requirements for green production and sustainable development.<\/strong><\/span><\/li>\n<\/ul>\n<p data-rm-block-id=\"block-136\">PrimeCoat\u00ae is one of the cutting-edge solutions that meet this trend with many advantages:<\/p>\n<ul>\n<li data-rm-block-id=\"block-137\"><span style=\"font-size: 100%;\"><strong>Does not contain Chromium VI.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-138\"><span style=\"font-size: 100%;\"><strong>No rinsing is required.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-139\"><span style=\"font-size: 100%;\"><strong>Reduce water consumption.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-140\"><span style=\"font-size: 100%;\"><strong>Save operating costs.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-141\"><span style=\"font-size: 100%;\"><strong>Environmentally friendly.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-142\"><span style=\"font-size: 100%;\"><strong>Suitable for modern production lines.<\/strong><\/span><\/li>\n<\/ul>\n<h2 data-rm-block-id=\"block-143\"><span class=\"ez-toc-section\" id=\"PrimeCoat%C2%AE_Pretreatments\"><\/span><span style=\"font-size: 90%;\"><strong>PrimeCoat\u00ae Pretreatments<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p data-rm-block-id=\"block-144\">To meet the requirements of each type of metal substrate, PrimeCoat\u00ae has a wide range of specialized products.<\/p>\n<h3 data-rm-block-id=\"block-145\"><span style=\"font-size: 90%;\"><strong>PrimeCoat\u00ae A10x-Series<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-146\">For aluminum.<\/p>\n<p data-rm-block-id=\"block-147\">Advantages:<\/p>\n<ul>\n<li data-rm-block-id=\"block-148\"><span style=\"font-size: 100%;\"><strong>Chrome-Free technology.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-149\"><span style=\"font-size: 100%;\"><strong>Increase paint adhesion.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-150\"><span style=\"font-size: 100%;\"><strong>High corrosion resistance.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-151\"><span style=\"font-size: 100%;\"><strong>Suitable for modern Coil Coating lines.<\/strong><\/span><\/li>\n<\/ul>\n<h3 data-rm-block-id=\"block-152\"><span style=\"font-size: 90%;\"><strong>PrimeCoat\u00ae Z10x-Series<\/strong><\/span><\/h3>\n<p>For:<\/p>\n<ul>\n<li data-rm-block-id=\"block-154\"><span style=\"font-size: 100%;\"><strong>Galvanized Steel<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-155\"><span style=\"font-size: 100%;\"><strong>Cold corrugated iron<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-156\"><span style=\"font-size: 100%;\"><strong>Iron Zam<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-157\"><span style=\"font-size: 100%;\"><strong>Zinc Alloy<\/strong><\/span><\/li>\n<\/ul>\n<p>Advantages:<\/p>\n<ul>\n<li data-rm-block-id=\"block-159\"><span style=\"font-size: 100%;\"><strong>High anti-corrosion performance.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-160\"><span style=\"font-size: 100%;\"><strong>Meet international environmental standards.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-161\"><span style=\"font-size: 100%;\"><strong>Supporting sustainable production.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-162\"><span style=\"font-size: 100%;\"><strong>PrimeCoat\u00ae Z13x-Series<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-163\"><strong><span style=\"font-size: 100%;\">Chromium III Technology<\/span>.<\/strong><\/li>\n<\/ul>\n<p>Help:<\/p>\n<ul>\n<li>\n<p data-rm-block-id=\"block-165\"><strong><span style=\"font-size: 100%;\">Increased corrosion resistance.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-166\"><strong><span style=\"font-size: 100%;\">Improve the durability of the paint layer.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-167\"><strong><span style=\"font-size: 100%;\">Effectively replaces traditional Chromium VI technology.<\/span><\/strong><\/p>\n<\/li>\n<li data-rm-block-id=\"block-168\"><strong><span style=\"font-size: 100%;\">PrimeCoat\u00ae MM10x-Series<\/span><\/strong><\/li>\n<\/ul>\n<p><span style=\"font-size: 100%;\">Chrome-Free Solution for Multimetal:<\/span><\/p>\n<ul>\n<li>\n<p data-rm-block-id=\"block-170\"><span style=\"font-size: 100%;\"><strong>Cold rolled steel.<\/strong><\/span><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-171\"><span style=\"font-size: 100%;\"><strong>Galvanized steel.<\/strong><\/span><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-172\"><span style=\"font-size: 100%;\"><strong>Aluminum.<\/strong><\/span><\/p>\n<\/li>\n<\/ul>\n<p>Advantages:<\/p>\n<ul>\n<li data-rm-block-id=\"block-174\"><span style=\"font-size: 100%;\"><strong>Simplify the process.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-175\"><span style=\"font-size: 100%;\"><strong>Reduce the number of chemicals used.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-176\"><span style=\"font-size: 100%;\"><strong>Increase operational efficiency.<\/strong><\/span><\/li>\n<\/ul>\n<h3><span style=\"font-size: 90%;\"><strong>PrimeCoat\u00ae MM13x-Series<\/strong><\/span><\/h3>\n<p>The Chromium III series is suitable for a wide variety of metal substrates, making it easy for businesses to standardize processes while ensuring high corrosion resistance and adhesion.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"DK_Chemicals_%E2%80%93_Metal_Pretreatment_Solution_Provider\"><\/span><span style=\"font-size: 90%;\"><strong>D.K Chemicals \u2013 Metal Pretreatment Solution Provider<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>As a unit operating in the field\u00a0 of <strong>metal surface treatment chemicals<\/strong>, <strong>D.K Chemicals<\/strong> provides advanced pretreatment solutions for many industries such as:<\/p>\n<ul>\n<li>\n<p data-rm-block-id=\"block-181\"><strong><span style=\"font-size: 100%;\">Coil Coating.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-182\"><strong><span style=\"font-size: 100%;\">Metalworking.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-183\"><strong><span style=\"font-size: 100%;\">Powder coating.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-184\"><strong><span style=\"font-size: 100%;\">Steel structure.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-185\"><strong><span style=\"font-size: 100%;\">Home appliances.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-186\"><strong><span style=\"font-size: 100%;\">Automobiles and components.<\/span><\/strong><\/p>\n<\/li>\n<li>\n<p data-rm-block-id=\"block-187\"><strong><span style=\"font-size: 100%;\">Electrical \u2013 Electronics.<\/span><\/strong><\/p>\n<\/li>\n<\/ul>\n<p>Not only providing products, D.K Chemicals also accompanies customers in:<\/p>\n<ul>\n<li data-rm-block-id=\"block-189\"><span style=\"font-size: 100%;\"><strong>Survey and evaluation of production lines.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-190\"><span style=\"font-size: 100%;\"><strong>Choose the right chemicals for each type of metal substrate.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-191\"><span style=\"font-size: 100%;\"><strong>Optimize the pretreatment process.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-192\"><span style=\"font-size: 100%;\"><strong>Reduce chemical and water consumption.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-193\"><span style=\"font-size: 100%;\"><strong>Improve the anti-corrosion effect.<\/strong><\/span><\/li>\n<li data-rm-block-id=\"block-194\"><span style=\"font-size: 100%;\"><strong>Meet international technical and environmental standards.<\/strong><\/span><\/li>\n<\/ul>\n<p>With an experienced technical team and a high-quality product portfolio, D.K Chemicals aims to help businesses improve product quality, optimize operating costs and increase competitiveness in the market.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions_FAQ\"><\/span><span style=\"font-size: 90%;\"><strong>Frequently Asked Questions (FAQ)<\/strong><\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span style=\"font-size: 90%;\"><strong>1. What is surface pretreatment?<\/strong><\/span><\/h3>\n<p>Surface pretreatment is the process of cleaning and creating chemical metabolism layers on metals before painting or coating surfaces to increase adhesion and corrosion resistance<\/p>\n<h3><span style=\"font-size: 90%;\"><strong>2. Why does surface pretreatment determine the life of the paint?<\/strong><\/span><\/h3>\n<p>Because this process helps to remove grease, rust and impurities, and creates a bonding layer between the metal and the paint, making the coating more durable and limiting peeling.<\/p>\n<h3><span style=\"font-size: 90%;\"><strong>3. What are the steps of the surface pretreatment process?<\/strong><\/span><\/h3>\n<p>Typically includes mechanical treatment, degreasing, rust removal, water washing, chemical metabolic layering, and drying before painting.<\/p>\n<h3><span style=\"font-size: 90%;\"><strong>4. If there is no surface pretreatment, what happens?<\/strong><\/span><\/h3>\n<p>The paint is easy to peel off, reduces adhesion, quickly appears rust and shortens the life of the product.<\/p>\n<h3><span style=\"font-size: 90%;\"><strong>5. What metals are PrimeCoat\u00ae Pretreatments suitable for?<\/strong><\/span><\/h3>\n<p>PrimeCoat\u00ae has product lines for cold-rolled steel, galvanized steel, zinc steel, aluminum and many other metal substrates.<\/p>\n<h3><span style=\"font-size: 90%;\"><strong>6. Does PrimeCoat\u00ae contain Chromium VI?<\/strong><\/span><\/h3>\n<p>Many PrimeCoat\u00ae series use <strong>Chrome-Free<\/strong> or <strong>Chromium III (Cr\u00b3<\/strong><strong>\u207a) technology<\/strong>, which meets environmental standards such as RoHS and REACH.<\/p>\n<hr \/>\n<h3><span style=\"font-size: 90%;\"><strong>Related Articles<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-210\"><span style=\"font-size: 100%; color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/thep-ma-kem-bi-ri-set\/\">Why does galvanized steelstill rust white? Efficient Passivation Solutions for the Metal Industry<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-211\"><span style=\"font-size: 100%; color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/lam-sach-va-tien-xu-ly-kim-loai\/\">Metal cleaning and pretreatment<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-212\"><span style=\"font-size: 100%; color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/ma-kem-nen-dung-cr3-cr6\/\">Galvanizing process and the trend of choosing modern passive chemical<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-213\"><span style=\"font-size: 100%; color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/?p=4469&amp;preview=true\">Deoiling and rust removal in hot-dip galvanizing: two stages that determine the quality of the coating<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-214\"><span style=\"font-size: 100%; color: #253782;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/hoa-chat-ma-kem\/\">Galvanizing chemicals and common &#8220;problems&#8221; of plating<\/a><\/span><\/p>\n<h3><span style=\"font-size: 90%; color: #282828;\"><strong>You May Be Interested In<\/strong><\/span><\/h3>\n<p data-rm-block-id=\"block-216\"><span style=\"color: #253782; font-size: 100%;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/san-pham\/z838-4p\/\" target=\"_blank\" rel=\"noopener\">Where to provide reputable and quality surface treatment products?<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-217\"><span style=\"color: #253782; font-size: 100%;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/danh-muc-san-pham\/danh-muc-san-pham\/tay-dau-etching\/\" target=\"_blank\" rel=\"noopener\">Good Price Oil Removal Chemicals<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-218\"><span style=\"color: #253782; font-size: 100%;\"><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\">Good Price Passivated Chemicals<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-219\"><span style=\"color: #253782; font-size: 100%;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/phu-gia-cho-ma-kem-nhung-nong\/\">Where to buy reputable hot-dip galvanized additives<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-127\"><span style=\"color: #253782; font-size: 100%;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-chemicals.vn\/san-pham\/z838-4p\/\" target=\"_blank\" rel=\"noopener\">Address to provide reputable white rust remedies?<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-128\"><span style=\"color: #253782; font-size: 100%;\"><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\">Good Price Passivated Chemicals<\/a><\/span><\/p>\n<p data-rm-block-id=\"block-129\"><span style=\"color: #253782; font-size: 100%;\"><a style=\"color: #253782;\" href=\"https:\/\/dk-metalsurfacetreatment.com\/phu-gia-cho-ma-kem-nhung-nong\/\">Where to buy reputable hot-dip galvanized additives<\/a><\/span><\/p>\n<hr \/>\n<p>&nbsp;<\/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=\"C\u00f4ng ty TNHH Ho\u00e1 Ch\u1ea5t D.K\" width=\"161\" height=\"161\" 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: 161px) 100vw, 161px\" \/><\/p>\n<h3><strong><span style=\"font-size: 90%; color: #253782;\">D.K. Chemicals Co., Ltd.<\/span><\/strong><\/h3>\n<p><span style=\"color: #253782;\">Address: 50 Street No. 12, Cityland Park Hills Residential Area, Go Vap Ward, Ho Chi Minh City<\/span><\/p>\n<p><span style=\"color: #253782;\">Hotline: 0909678599<\/span><\/p>\n<p><span style=\"color: #253782;\">Email: de@dk-chemicals.vn<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In manufacturing industries such as mechanical, automotive, household appliances, steel structures or coil coating, the quality of the paint not only depends on the type of paint or spray painting technology but is also directly affected by the pretreatment of the surface. In fact, many businesses invest in modern paint systems, use high-quality paints or<\/p>\n","protected":false},"author":9,"featured_media":4720,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[813,15],"tags":[783,784,782],"class_list":["post-4719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-news","category-news","tag-metal-surface-pretreatment","tag-pretreatment-chemicals-en","tag-surface-pretreatment"],"_links":{"self":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/4719","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\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/comments?post=4719"}],"version-history":[{"count":11,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/4719\/revisions"}],"predecessor-version":[{"id":5835,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/4719\/revisions\/5835"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media\/4720"}],"wp:attachment":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media?parent=4719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/categories?post=4719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/tags?post=4719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}