Our company can supply you with good quality feed additives materials, such as ferrous sulphate , zinc sulphat, manganese sulphate, etc. Product:Copper sulphate Appearance:BlueCrystalPowder Specs.: Purity98.5% min.Cu25% min.Pb15ppmmax.As5ppmmax.Waterinsoluble0.2%max.Particlesize(40mesh)99%passingPacking:25/50kgsnetbag Quantity:25mt/20'FCL Pls feel free to contact us if you are interested in it.