Established in 2014 in Wenzhou, Zhejiang, LONGGONG VALVE manufactures products in strict compliance with ANSI, API, JIS, BS, DIN, GB, and HG standards. Its valves serve critical sectors including oil & gas, petrochemicals, natural gas, power generation, pharmaceuticals, metallurgy, water supply, and defense. Operating from a 10,000 m² facility with over 200 employees, the company houses a CAD design center and a 3D simulation system, supported by advanced inspection equipment such as spectrometers and pressure test benches. Products are marketed domestically and exported to Europe, America, Southeast Asia, the Middle East, and Africa. Core offerings include stainless steel ball valves, carbon steel ball valves, gate valves, globe valves, filters, check valves, electric valves, and precision castings.