Doosan Engineering & Construction is a South Korean company and a part of the chaebol Doosan Group. They specialize in building infrastructure such as bridges, highways and high-speed railways. More recently, Engineering & Construction has tried to branch out to overseas markets, completing projects for international airports, cement and steel factories, crude oil processing facilities, transportation facilities, and waste water treatment facilities. Doosan Engineering & Construction also has constructed complex thermal plants, multiple environmental projects and food and beverage plants.