... . White powder,particles 3.ISO9001:20skype:angelchina3233% min Zinc Sulphate Fertilizer Granular-zinc sulphate mono -industry /feed /fertilizer grade -Zn: 21%, 22%, 33 ... Formula: ZnSO4•H2O Other name: zinc sulfate,zinc sulphate,zinc sulphate hepta,zinc sulfate hepta,white vitriol,salt of vitriolSPECIFICATION: ... , and mordant in dyeing and printing industry; Zinc Sulphate Fertilizer Granular factory