Dalian Liaonan Shipyard is a subsidiary of DSIC/CSIC.. They specialise in shipbuilding, shiprepair and conversion/modification, building dredging offshpre equipment and building offshore support & special vessels for example a 4,000-ton workboat in 2025 for China National Petroleum Corporation.( with capabilities such as platform supply, transport of drilling equipment, fresh water/fuel supply, and firefighting) 更多信息