What is the level of China Aluminum Lanzhou Branch?

Heavyweight enterprises in the development of national nonferrous metal economy. According to the enterprise survey, the Lanzhou Branch of Chinalco was formerly Lanzhou Aluminum Factory, which was founded in 1958. It was the first electrolytic aluminum factory built in the northwest of China during the Twelfth Five-Year Plan period. 1999 was restructured into Lanzhou aluminum co., ltd., and in 2004 it became a holding subsidiary of Chinalco co., ltd. through asset restructuring. In 2007, the share-trading reform began to be implemented.