Founded in 2001 and located in Qingpu, Shanghai, DBV specializes in the R&D of intelligent control valves. Its main products include high-temperature high-pressure bidirectional zero-leakage butterfly valves and all-metal hard-sealed butterfly valves, with temperature resistance ranging from -40°C to 1000°C and pressure ratings from 150LB to 2500LB, compliant with ISO, ANSI, API, and other standards. The company operates three core departments—R&D, manufacturing, and testing—and is equipped with CNC machining, automatic welding, plasma spray welding, NDT, and fully automated testing equipment, enabling full-chain quality control. Its products are widely applied in coal chemicals, LNG, petroleum, chemicals, metallurgy, heating, and other industries. Its core product portfolio includes globe valves, lined rubber/PTFE valves, control valves, butterfly valves, ball valves, gate valves, safety valves, check valves, and others.