According to Aiqi's inquiry, Chinalco Co., Ltd. (hereinafter referred to as the company) is an important state-owned backbone enterprise managed by the central government, engaged in mineral resources development, non-ferrous metal smelting and processing, related trade and engineering and technical services. It is the second largest supplier of alumina, the third largest supplier of electrolytic aluminum and the fifth largest supplier of aluminum processing materials in the world, ranking first in the country in terms of comprehensive strength. The company has total assets of 354.55 billion yuan, 240,000 employees and 64 subordinate enterprises. In 2009, the company produced 7.78 million tons of alumina, 3.44 million tons of aluminum and aluminum alloys, 609,500 tons of aluminum processed materials, 6,543,800 tons of copper processed materials and 2,945,438+000 tons of refined copper, achieving sales income of 654.38+035.6 billion yuan, and once again ranking among the top 500 enterprises in the world. The company has seven business segments: aluminum, copper, rare earth, engineering technology, mineral resources, overseas and trade. Chinalco Limited, which is controlled by the company, is a listed company in new york, Hong Kong and Shanghai (stock codes are ACH in new york, 2600 in Hong Kong and 60 1600 in Shanghai respectively). The company also has two domestic listed companies, namely Yunnan Copper and Jiaozuo Wanfang. Chinalco Co., Ltd. was jointly rated as the top 20 10 listed companies in China 100 by Buffett magazine, World Enterprise Competitiveness Laboratory and World Economist Weekly, ranking 19. In the same year, it was named "25 listed companies with the most investment value in China" by the magazine.