$ 0 0 ZnSO4.H2O ≥98% 98% Zn ≥34.5% 35.0% As ≤0.0005% 0.0002% Pb ≤0.002% 0.001% Cd ≤0.003% 0.001% Fineness 60-80 mesh ≥95.0% 95% **Service We offer clients value-added services to ensure