Designed for blackening steel, it combines blackening and phosphating, thus greatly enhancing film adhesion and corrosion resistance.

CWF-804A high temperature black salt is used at high temperature to form a protective oxide film on the surface of steel workpiece. When some workpiece 804 is black and red, 804A can be used. The color of the film is black or blue depending on the material and surface state. black. The oxi…

The high temperature black salt is used at high temperatures to form a protective oxide film on the surface of the steel workpiece. The color of the film is black or blue-black depending on the material and surface state. The oxide film of steel workpieces is bright and beautiful, with exc…

It can be sprayed or immersed to form a dark brown rust on the steel workpiece, showing a long history and a sense of vicissitudes. It is widely used in lighting decoration, office equipment and gift decoration. It is easy to operate, easy to maintain and low in consumption.