Wenzhou Doctech Auto-Control Valve Co., Ltd. is a science and technology enterprise which integrates the valve casting, design, manufacturing, sales and service. We mainly manufacture high quality products such as ANSI, GB, BS, DIN and JIS standard ball valves, gate valve, globe valve, check valve, butterfly valve, cryogenic valve, pipe fitting and forged flange, which are widely used in petrol, chemical industry, water, food, pharmacy, etc. Our products sell well in America, Europe and ...