... experience of exporting 3,Sample is free 1,High quality fertilizer Copper sulphate pentahydrate with Cu 25%2,20 years ... experience of exporting3,Sample is freeCopper sulphate pentahydrateProduct Name: Copper sulphate pentahydratel Formula: CuSO4.5H2O l HS Code: 2833250000l ... 3) Chemical industry: used in the manufacture of copper salt leaching,copper chloride,cuprous chloride and cuprous oxide,etc.(4) ...