Song Da 7 JSC engages in construction of buildings, power systems and water supply systems. The company provides drilling, engineering, architectural and interior decorating services. The firm develops and operates small and medium-sized hydropower plants. It manufactures and trades construction materials, concrete products and fabricated metal structures and components. The company also provides real estate, transportation and vehicle maintenance and repair services. The company was founded in August 1976 and is headquartered in Son La, Vietnam.