Sesan 4A HydroElectric JSC engages in the construction, operation, and management of hydro power plants. It is also involved in generation and distribution of electricity. Its activities include the following: construction of industrial buildings, power lines and transformer stations, irrigation works, and civil works; manufacturing of construction and building materials; provision of leveling services; domestic travel services; and repair and maintenance services of hydro power plants. The company was founded on May 15, 2007 and is headquartered in Pleiku, Vietnam.