Zhengyuan Valve Group Co., Ltd., based in Wenzhou’s Longwan District, brings extensive experience in valve solutions for acid and alkali media applications across petrochemical, chemical, fertilizer, and pharmaceutical industries . The company offers a comprehensive material selection strategy to address the demanding corrosion challenges posed by hydrochloric acid, sulfuric acid, acetic acid, caustic soda, and ammonia . For strong acid environments, 316L stainless steel forged valves provide reliable resistance to pitting and crevice corrosion, while lined valves with PTFE (polytetrafluoroethylene) offer exceptional inertness across a wide range of aggressive chemicals including hydrochloric, sulfuric, and nitric acids, as well as organic solvents . For highly corrosive conditions, Monel and Alloy 20 valves deliver stable performance in hydrochloric acid and hydrofluoric acid services . In alkaline media applications, the company’s sour-service gate valves, produced with specialized materials and heat treatment processes, effectively resist sulfide stress corrosion . With pressure ratings from 0.1MPa to 42MPa and temperature capabilities from -196°C to 800°C, Zhengyuan supports diverse process conditions . The company maintains comprehensive quality control from raw material verification through finished product testing, reflecting its practical, quality-first manufacturing philosophy . Through continuous refinement of forged steel valve technologies and material selection aligned with chemical service requirements, Zhengyuan Valve Group remains focused on delivering reliable valve solutions for critical chemical processing infrastructure .