we produce sodium sulphide & sodium sulphidrate in big quantity and best quality. NaHS can be used to remove Zinc and Mercury from Alumina, Thus esultingin better quality and higher value aluminum. It is widely, used in the separation of copper molybdenum ores, in paper processing and the tanning industry. And applications of Na2S is as the below: Tanning : Unhairing hides.  Mining : Ore Flotation.  Pulp & Paper : Manufacturing Kraft Pulp. Chemicals : Manufacture of Sulfur dyes. Textiles : Sulfur dye reducing agent