... ProductFormulaContentFinenessPropertyHeavy metals and Injurants(%)Ferrous SulphateMonohydrateFeSO4.H2OFeSO4.H2O≥91%,Fe≥30.0%pass 420μm Sieve ≥95%White ... GranuleAs≤0.0002Pb≤0.002Ferrous SulphateHeptahydrateFeSO4.7H2OFeSO4.7H2O≥98%,Fe≥19.7%-----------Cyan CrystalAs≤0.0002Pb≤0.002Ferrous ... FumarateC4H2FeO4C4H2FeO4≥98%,Fe≥30.0%pass 420μm Sieve ≥95%Blood ...