Therefore, copper products generally require passivation protection treatment. The passivation agent forms a stable compound with the copper surface, which can effectively prevent further oxidation and corrosion of the copper parts. So as to achieve the protective effect.

Copper chromium-free passivation fluid KM0407 is a new patented product developed by our company to improve the corrosion resistance of copper parts. It has the characteristics of strong inactivation ability and environmental protection. The use of this process can make the copper material have the ability to store indoors for more than 2 years without discoloration, which is a better choice to replace the traditional chromic acid process. This product does not contain chromic acid, nitrous acid and other toxic substances, has a slightly turbid appearance and has fine foam. It is currently one of the competitive advantage products in the same industry.