Daewoo-Mangalia Heavy Industries Ltd. (DMHI) was established in 1997 as a joint venture between DSME and the Romanian government. After taking over DMHI, a conversion & repair shipyard, DSME has overhauled the facility, manpower, manufacturing processes and turned around the company successfully to make a profit in 2000, only 4 years after the takeover. DMHI had operated in the black for 3 years in a row as of 2010 and has rapidly grown to be able to build a new vessel with high technology and quality. As named one of the top 10 companies in Romania and recognized as the most successful foreign investment company, it has boosted Korea's national prestige in the country.

Established in Bajiao Town, Yantai Economic & Technical Development Zone, under DSME's global network strategy to be the world's best shipbuilding company, DSME SHANDONG CO., LTD. (DSSC) produces blocks and on/offshore infrastructure.

DSEC is a professional engineering company specialized in designing vessels and offshore plants built by its parent company, DSME. With its home office in Busan, DSEC is preparing to take off as a professional "Global Engineering" company that provides conceptual and basic designs of large-scale offshore plants as well as ships based on its accumulated design expertise. The company has been creating added value services to the business through designing ships and offshore structures on the world stage.

DeWind Corporation) is a US-based wind turbine engineering company that DSME acquired as part of its business expansion strategy for sustainable growth. It is an internationally active producer of wind power plants with a product development center in Germany.

Located in the Yulchon Industrial Complex of Gwangyang Free Trade Zone, Samwoo produces blocks, hatch covers, propellers and shafts for mid-size vessels, and on/offshore products. With "Trust" and "Passion" as core values, Samwoo strives to be the best partner for our customers.

Wellive is a total management service company who provides Catering, Resting place, Hotel, customer support, distribution, housing management services, security business, landscaping, and quarantine for the parent company, DSME, with people's happiness at the heart of our business. The company's home office is located in Geoje, Gyeongsangnam-do and operates in three business divisions, F&C, Hotel and Development, and Training, to provide world-class services that fully meet the needs of our customers. As a global top total management service company, Wellive is committed to provide our customers better and more comfortable living.

DSME Construction is a high-tech construction company established in an effort to expand DSME's physical presence abroad as part of its global network strategy, a mid to long term grow strategy. Since founded in 1969, it has made aggressive efforts to introduce advanced technology. The company has unparalleled technological expertise such as the TBM tunnel excavation technology that it introduced the first time in the industry to extend the excavation by 50㎞. Based its ceaseless development of technology, the company boasts extensive and superior experiences in areas of construction in subways, roads, and harbors. In cooperation with its parent company, DSME, the company will expand to the offshore construction business and spearhead building the shipbuilding and marine bases in every part of the world through advanced construction technology and scientific management.

Shinhan Machinery, a subsidiary of DSME who is one of the world's top shipbuilders, is the world's largest living quarter module maker for offshore facilities and topside production platforms. Established in 1990, the company has the best technology and know-how in offshore living quarters and modules accumulated through extensive experience of building blocks for vessels. Shinhan Machinery believes in giving back to society and growing with local communities, and is committed to becoming the leader in the living quarter and module area in cooperation with its parent company, DSME.

DSME TRENTON is a manufacturing outpost for DSME's wind power business in the North America established as a joint venture with the government of Nova Scotia, Canada. Based on its geological and competitive advantages backed by the state government's investment, the company has started manufacturing wind power towers as well as blades, targeting the North American and Eastern Canadian markets.