KOSEN is a Leaing China Valve Manufacturer of ball valves, gate valves, globe valves, check valves, butterfly valves, plug valves, and pipe strainers (various types: trunnion?mounted, fully?welded, cryogenic, high?pressure, floating, multi?way, metal?seat, etc.) ,integrating research and development, testing, manufacturing, sales, and after?sales service under one roof. https://www.kosenvalve.com