Douson is one of the China's leading manufacturers of industrial steel valves, recognized as a standard-bearer in quality and innovation.Commit to leverage advanced engineering capabilities and innovation to create hard-working valves that meet critical industrial needs in the areas of power generation, chemical and petrochemical, oil and gas, mining, cryogenic, and ship-building industries. Douson's many product lines are grouped into the broad categories of: gate, globe,check,and ball valves;6A valve;wellhead&christmas tree;bop;manifold. Sizes up to 56'', with pressure ratings from vacuum to over 20,000 psi, temperature ratings of up to 1,200 °F, and availability of many material and design options. All of Douson's valves are designed and manufactured with quality as a priority, and incorporate many unique design features for environmentally friendly performance, simple maintenance, and reliable service. Douson.Quality first.