Song Da Corporation is a State-owned enterprise founded in 1960 and directly under the management of the Ministry of Construction. The Corporation specialies in building hydropower plants, intrastructure, transport engineering, civil and industrial works; installing power transmission lines and sub stations at industrial zones and urban areas; producing construction materials such as steel and cement, providing consulting service in construction; importing and exporting materials such as steel and cement, providing consulting service in construction; importing and exporting and exporting materials, equipment, construction technologies and others