Founded in 2005 and located in Wenzhou, Zhejiang, with a registered capital of RMB 11.88 million, GKV specializes in severe-service valves. Its main products include slab gate valves, knife gate valves, deashing valves, and slurry valves, covering bore sizes from DN50 to DN1600 and pressure ratings from 0.25 to 6.4 MPa. Actuation options include manual, electric, pneumatic, and electro-hydraulic drives. Materials include cast steel as well as stainless steels 304, 316, and 904L, manufactured in accordance with GB standards. The company holds ISO9001, API 6D, SIL, CCS, and CE certifications. Its products are sold widely in China as well as in Southeast Asia, the Middle East, and Europe, and are applied in petroleum, chemical, natural gas, papermaking, pharmaceuticals, mining, wastewater treatment, water supply and drainage, and other industries.