Zhejiang Changlong Petrochemical Equipment Co., Ltd. Founded in 1978 and located in Binhai Park, Wenzhou Economic & Technological Development Zone, Zhejiang Changlong Petrochemical Equipment Co., Ltd. is a national high-tech enterprise. We specialize in manufacturing various compressor parts, pump fittings, non-standard components, and localized alternatives for imported spare parts. We have long served as a supporting supplier for numerous main engine manufacturers, with our products widely adopted in petroleum refining, chemical engineering, oilfields, mining, ethylene production, iron and steel metallurgy and other industries.