Passivation treatment is a kind of surface treatment commonly used in rapid prototype and precision parts. It is also called chromate treatment. It is a chemical reaction of passivation solution to prevent corrosion and prolong rust. The materials that can be passivated are: Stainless steel, titanium alloy, copper alloy, aluminum alloy and other materials, passivation surface treatment is widely used in aerospace, mobile communications, undersea products, auto parts, precision hardware, medical equipment and other industries, we can customize according to your requirements Primary color and gold passivation, more surface treatment of rapid prototype, precision parts and low volume production parts, you can send 3D/CAD files directly to us, provide free quote within 2-4 hours, 3-5 days global delivery sales@zxmade.com