... Oxide 1)CuO%,98%;Cu,78.2% 2)Package,25kg/bag 3)Usage,circuit board plating, Ferrite magnetic materials ... copper. Mainly used for circuit board plating, Ferrite magnetic materials and other electronic industries, glass, ceramic, enamel, paint ... heat absorber surface, reducing tobacco tar, artificial rainfall materials,etc. Testing ItemPlating gradeE-ClassIndustrial gradeCuO ≥%98.59898Zn ≤%0.02------ ...