Hilong Holding Limited, an investment holding company, operates as an oil field equipment and services provider in China, Hong Kong, Russia, Central Asia and Europe, the Middle East, North and South America, South Asia, Southeast Asia, Africa, the Oceania, and internationally. It operates through Oilfield Equipment Manufacturing and Services, Oilfield Services, and Offshore Engineering Services segments. The Oilfield Equipment Manufacturing and Services segment produces and sells oilfield equipment. The Oilfield Services segment provides well drilling services, integrated comprehensive services, oil country tubular goods trading, and related services to oil and gas producers. The Offshore Engineering Services segment offers engineering design, simulation analysis, and technical support; and various engineering construction services to the oil and gas industry. It is also involved in the provision of pipeline coating services; and research and development on the technology of manufacturing oil and gas equipment, and pipes. In addition, the company manufactures and distributes oil and gas equipment, as well as distributes hardbanding materials. Hilong Holding Limited was founded in 2001 and is headquartered in Shanghai, China.