CSSC Offshore & Marine Engineering (Group) Company Limited manufactures and sells marine and defense equipment in the People's Republic of China, other regions in Asia, Europe, Oceania, North America, and Africa. It offers defense equipment, including military ships, marine police equipment, and public service ships; and shipbuilding and marine products comprising feeder containerships, dredgers, offshore engineering platforms, and wind power installation platforms; and marine application business products, such as energy equipment, high end steel structures, construction machinery, environmental protection equipment, and industrial internet platforms. The company also engages in the metal and non-metallic shipbuilding, ship design, shipbuilding, design and fabrication of metal structures, ship outfitting manufacture and installation, ship removal and conversion, and ship repair activities; repair, debugging, and maintenance of shipboard equipment and system; provision of engineering and consulting, information transmission, and software and information technology services; ship leasing; and production and supply of fuel gas.

The company was formerly known as Guangzhou Shipyard International Company Limited and changed its name to CSSC Offshore & Marine Engineering (Group) Company Limited in June 2015.