... of dry cell,electroplating,dye,precision casting,tannage,etchant,feed additive and etc.Package size: 25kg,40kg,900kg,1000kg each bag ... SPECIFICATIONNH4Cl content (dry basis) % ≥99.5Moisture % ≤0.5Iron content (as Fe) % ≤0.0005Heavy metal (as Pb) % ≤0.0005Sulfate content (as SO4 ...