Product:Zinc Sulphate MonohydrateSPECIFICATION:Purity: 98%min Zn 35% min Pb 10 ppm max As 10 ppm max Cd 10 ppm max Size 80mesh Manuafacturer: Rech Chemical Co. Ltd Website: Rech Chemical Co. Ltd is manufacturer of zinc sulfate in China, we are authorized by ISO9 and FAMI-QS.