... oxide plating grade 1)CuO%,98%;Cu,78.2% 2)Package,25kg/bag 3)Usage,circuit board plating, Ferrite magnetic materials copper oxide plating ... be reduced to metallic copper. Mainly used for circuit board plating, Ferrite magnetic materials and other electronic industries, glass, ceramic, enamel ... .2Cl¯ ≤%0.010.20.2 High quality black copper oxide plating grade