Founded in 2001 and located in Wenzhou, Zhejiang, FGKJ has specialized in butterfly valves and specialty rotary ball valves for over 20 years. Its main products include bidirectional hard-seal rotary ball valves, concentric butterfly valves, double-offset high-performance butterfly valves, triple-offset butterfly valves, ventilation butterfly valves, expansion butterfly valves, and others, available in wafer, lug, flanged, and welded configurations. Materials include carbon steel, stainless steel, and alloy steel, with pressure ratings from 0.6 to 4.0 MPa. These products are applied in petroleum, papermaking, hydropower, food, pharmaceuticals, smelting, wastewater treatment, chemicals, construction, water supply and drainage, and other industries.