Since 1989, China Vango Valves Manufacturer (Also Named As "YONGGAO VALVE" Manufacture) has dedicated itself to the manufacture and service of a wide range of industrial valves and fittings for the services of Oil, Gas, Refinery, Chemical, Marine, Power Station and Pipeline Industries After over 3 decades of development and innovation, China Vango Valves has been well approved by ISO 9001:2000, API 6D & CE. Our main Manufacturing and Supplying Capability Covering: Through Conduit Gate Valve, Knife Gate Valve, Bellow Sealed Valve, Gate Valve, Check Valve, Globe Valve, Ball Valve, Butterfly Valve, Plug Valve, Cryogenic Valve, Diaphragm Valve, Needle Valve, Pinch Valve, Strainer, Steam Trap, Flanges and Pipe Fittings.