1. This product is made up of trivalent chromium and other accelerators, complexing agents, etc.

2. When aluminum and its alloy products are in contact with the treatment liquid, the oxidant in the solution will act to form a protective film with a certain thickness, hardness and corrosion resistance on the surface of the product.

3. The protective film can withstand salt spray test for at least 300 hours (depending on the aluminum material), and has the characteristics of high temperature resistance and low resistance. The color of the film is normally colorless. If the treatment time is too long, the surface may appear pale blue. color

4. Widely used in surface passivation and oxidation resistance of die-cast aluminum, copper-aluminum joint parts and aluminum alloy.