... , fertilizer, additive, and for industry and agriculture magnesium sulfate heptahydrate1).MgSO4.7H2OMgSO4≥99%, Mg≥9.7%, As≤0.0002%, Pb≤0 ... .0015%2).MgSO4.H2OMgSO4≥97.7%, Mg≥15%, As≤0.0002%, Pb≤0 ... agriculture applicationsInner packing: 25kg/PP net bag Magnesium sulfate heptahydrate(MgSO4.7H2O) 99.8%,96%