Nam Mu Hydropower Joint Stock Company is a Vietnam-based company engaged in the electricity industry. It operates its hydropower plants and sells the electricity generated to its sole customer, Vietnam Electricity Group (EVN). The Company also constructs power plants and provides engineering and installation services for civil and industrial construction activities. In addition, it trades construction materials and fixtures, such as bricks, tiles, cement, sand, gravels and roofing sheets. The Company's parent entity is Song Da 9 Joint Stock Company, and it has one subsidiary named Song Da Tay Do Joint Stock Company.