Hilong Holding Limited is an investment holding company that provides oilfield equipment and services. It operates through three segments: Oilfield Equipment Manufacturing and Services, Oilfield Services, and Offshore Engineering Services. The company serves the oil and gas industry across China, Hong Kong, Russia, Central Asia, Europe, the Middle East, the Americas, South Asia, Southeast Asia, Africa, Oceania, and other international markets. Founded in 2001, it is headquartered in Shanghai, China.