Profile: Chengdu Hengyi Chemical Industry Co., Ltd. offers food grade and industrial grade sodium pyrosulfite. We supply organic chemical raw materials, inorganic chemical raw materials, electroplating raw materials, coating materials, plastic raw materials, washing raw materials, paper-making raw materials, rubber raw materials, oil additives, fine chemical raw materials, glass raw materials, ceramic materials, paint raw materials, chemical building materials, chemical reagents, food additives, latex paint chemical raw materials, waterproof & fireproof chemical raw materials, organic chemical solvents, pigment dye chemical raw materials, and textile printing & dyeing, chemical raw materials. 90% caustic potash flakes are mainly used in alkaline batteries industry, soaps, high-class detergents and cosmetics.