Appearance: White powder or granular Use.: Agriculture fertilizer, paints, fibre,etc Packing: 25kgs, 50kgs, 1000kgs bag, ItemPremium GradeFirst GradeRegular GradeZn% min35.7035.3434.61ZnSO4.H2O% min98.097.095.0Insoluble matter% max0.0200.0500.10PH Value(50g/L)4.04.0 -Cl% max0.200.60 -Fe% max0.010.020.06Pb% max0.0020.0070.010Mn% max0.010.030.05Cd% max0.0020.0070.010Cu% max0.001 -- Usage:As Zinc ...