锌的硫酸

Zinc sulphate, we promise low heavy metals and competitive prices . Any questions or comments, please feel free to ask us . We, Changsha May Chemis Co Ltd ,hope to be your reliable partner in China Zinc sulphate hepta------------------- Purity:98%min Zn:19-22% As:5ppm max Pb:10ppm max Cd:20ppm max Water insoluble:0.05%max Fe:50ppm max Ni:10ppm max Zinc sulphate mono --------------------- Purity:98%min Zn:35% As:5ppm max Pb:10ppm max Cd:20ppm max Water insoluble:0.05%max Fe:50ppm max Ni:10ppm max Any questions please feel free to ask us