Wison Engineering Services Co. Ltd. is an investment holding company that provides chemical engineering, procurement, and construction management services in Mainland China, the United States, the Middle East, Europe, and internationally. It operates through two segments: Engineering, Procurement and Construction; and Engineering, Consulting and Technical Services. The company offers integrated services such as feasibility studies, consulting, proprietary technologies, design, engineering, procurement of raw materials and equipment, construction management, and maintenance and after-sale technical support. It also imports, exports, and sells equipment and parts. Formerly known as Wison Energy Services Co. Ltd., it changed its name to Wison Engineering Services Co. Ltd. Founded in 1997, the company is based in Shanghai, the People's Republic of China, and operates as a subsidiary of Wison Engineering Investment Limited.