Yooshin Engineering Corporation provides engineering consulting services in South Korea and internationally. It focuses on road, rail and metro, bridge, airport, port, and tunnel projects. The company also constructs hydropower plants, downstream and multipurpose dams, waste and wastewater treatment centers, and thermal power plant sites, access roads, and airport land development. In addition, it designs and develops cities, towns, and other dwelling places, as well as new and renewable power, ecological systems, and environmental projects. It offers policy research, core technology development, private finance initiatives, private sector development, project development and feasibility studies, environmental and social impact assessments, transport, disaster, and safety impact assessments, planning, basic and detailed design, on-site design, engineering, procurement, and construction, construction management, operations and maintenance, smart operations and management, and solutions for local needs. Founded in 1966, the company is headquartered in Seoul, South Korea.