Henan Yuda Valve Manufacturing Co., Ltd. known as"YUDA", is an CE, ISO certified comprehensive company dedicated to Industrial Valve design, produce and sales, including high performance butterfly Valve, such as double eccentric resilient series, triple offset multi-level metal sealing items, also flanged flexible butterfly valve. besides, we also trade in other industrial valves for customers. Our products are designed, produced, qualified strictly as per API, DIN, JIS, GHOST, BS,ISO etc ,covering most of the materials, ductile iron, carbon steel, stainless steel, alloy steel, and other special materials. Having our own foundry factory, every stage from Raw material incoming, Process Inspection, Out-factory Testing, we spare every efforts to control ,make sure each part of valve can be traced from the beginning.  Our products are extensively applied in Oil& Gas, Chemical, Power, Water Treatment, Mineral and other industries, widely recognized and trusted by Industrial Valve Trading