Asia East Chemical Group Co***ny is good-sized professional operatives group which active in superior quality Zinc Sulphate Heptahydrate 98% Min. The product Is widely used in chemical, fibre, beverage, plating, pharmacy and dyeing industry. Welcome you would discuss business with us and we are ready to take your order. Contact: Bob Dong Fax: 86-536-6569387 aseangroup@126.com