Song Da No 9 JSC engage in the investment and construction of urban infrastructure and industrial zone. Its services include construction of civil and industrial works, and systems of traffic and transportation, water resources, hydro-power, post-office, electric wire, and transformer stations; construction consulting and bidding services; business of equipment, technology and building materials; and operation of electricity and cement plants. The company was founded in 1960 and is headquartered in Ha Noi, Vietnam.