Wujiang Meiyan Sanyou Dyestuff Chemical Co., Ltd., lies in Pingwang, a town famous for its location, which is near by the east of shanghai and between Hangzhou and Suzhou. WuJiang MeiYan Sanyou dyestuff chemical Co., ltd. Is a comprehensive enterprise relating to dyestuff, dye intermediates, pharmacy intermediate, a key member of China Dyestuff Industry Association, and a high-tech enterprise in jiangsu province. WuJiang MeiYan Sanyou dyestuff chemical Co., ltd. Has reached the environment protection requirement ISO14001 and pass the C. Q. C ISO9001.