It is used for glass industry, ceramics, glaze, coloration, iron or steel industry, metallurgy and so on. It is used for glass industry, ceramics, glaze, coloration, iron or steel industry, metallurgy and so on.Name: Copper Oxide StandardGB/T4734-1996 Item Index(%) Test Result(%)CuO ≥ 9899.32Fe2O3≤1.00.047CoO≤1.50.005NiO≤0.50.135ZnO≤0.50.020MgO≤1.0 EligibleMnO2≤0.5 Copper Oxide