... (CuO) % ≤ 0.006--------Manganese (Mn) % ≤ 0.0002--------Metallic Zinc (in accordance with Zn) % NoneNone------Muriatic Acid Insoluble Substance % ≤ 0.030 ... 99.5% - Indirect ZnO 99.9%~99.7%, etc. - Feed Grade ZnO 75%~65%, etc. - Calcined ZnO 99.5%, etpacking:Plastic ... film and waterproof paper bag.used:This product mainly uses in rubber Industry, Paints Industry, Ceramics Industry, floor tile, glass, ...