... a major manufacturer and Supplier of zinc sulphate ,ferrous sulphate ,manganese sulphate, magnesium sulphate , copper sulphate. Ferrous sulphate monohydrate is a mineral additive in animal ... can also be used to make pigment such as red ferric oxide etc. Granule material is good fertilizer, which ... can also be used to make pigment such as red ferric oxide etc. Granule material is good fertilizer, which ...