... sulphate pentahydrate with Cu 25%2,20 years experience of exporting3,Sample is freeCopper sulphate pentahydrateProduct Name: Copper ... blue complexing agent.Also in organic synthesis,spices and dye intermediates of catalysts.(5) Water treatment industry. Packing: 25kg/woven ... .2.Special inspection is provided according to the request of customers from certain countries, for example, sgs inspection ...