Trivalent chromium black passivator ; Black passivator for zinc plating ; POWER 912
． Does not contain hexavalent chromium, trivalent chromium black passivator for zinc plating.
． Corrosion resistance (NSS) is the same as the hexavalent chromium phosphate series.
．The appearance is a black film with almost no multicolored interference colors
．Wastewater treatment is simple, only normal neutralization treatment is required.
．It is suitable for alkaline rack plating and barrel plating, acid barrel plating,
．The passivated surface of large workpieces is not colorful and has no flow marks. The salt spray
test can reach 240 hours.