Shanghai IDDO Valve & Fitting Co., Ltd. is specializing in manufacturing & Supplying China high quality valves and fittings that comply with ASME, BS and Din Standard. Our Products: * API 6D Valves.（ Ball valve, Gate valve, Plug valve, Check valve, Globe valve and Butterfly valve ） * API 6A Series Valves. * Pipes, Fittings and Flanges . Our benefit to you :: * Certificate by ISO, API, CE . * Competitive price and timely communication. * Commitent to your orders. Shanghai IDDO Valve & Fitting Co., Ltd. is the business partner you can trust in China!