Founded in 2017 and located in Wenzhou, Zhejiang, with a registered capital of RMB 10 million, DEFU VALVE specializes in the R&D of anti-corrosion valves, with its core technology featuring PTFE and PFA fluoroplastic lining, suitable for highly corrosive media such as strong acids and strong alkalis. The company supports Chinese (GB), American (ANSI), and non-standard customization. Its sales network covers chemical industrial parks across China and more than ten countries overseas. The company is equipped with CNC machining, lining molding, and testing equipment, holds patented lined sealing technology, and has obtained ISO9001 certification as well as anti-corrosion pressure pipeline qualification. All products undergo 100% inspection with full traceability. These products are widely used in fine chemicals, pharmaceuticals, new energy, semiconductors, wastewater treatment, metallurgy, pesticide and dye industries, and other sectors. Its main product lines include fully lined ball valves, butterfly valves, gate/globe/check valves, diaphragm valves, discharge valves, and fittings, providing highly reliable anti-corrosion solutions.