Offshore Oil Engineering Co.,Ltd engages in the design, procurement, construction, offshore installation, commissioning and maintenance of offshore oil and gas development projects in China and internationally. It engages in the engineering, general contracting business; development of offshore and shallow water oil and gas; providing professional solution for deep water jacket engineering, fabrication, and installation; and underwater production systems and SURF, as well as designs and develops LNG terminals, LNG storage tanks, and natural gas liquefaction plants. The company is also involved in modular construction; designing and procurement to construction and project management; offshore wind power and hydrogen energy business; marine ranching; green energy equipment; providing package engineering solutions for Subsea Production Systems; production separators, test separators, slug flow catchers, production water treatment equipment, pressure vessel skids, natural gas compressor skids, and digital intelligent products. In addition, it offers inspection and commissioning; IMR and decommissioning; digital simulation; and digital twin solution, as well as operates 19 vessels fleets and yards. The company was founded in 2000 and is headquartered in Tianjin, China. Offshore Oil Engineering Co.,Ltd operates as a subsidiary of China National Offshore Oil Corporation.