Aluminum Corporation of China Limited (, known as Chalco), is a Chinese company listed in Hong Kong and in New York. A multinational aluminium company, its headquarters are in Beijing, People's Republic of China. It is the world's second-largest alumina producer and third-largest primary aluminium producer (and the largest producer in China). Chinalco is principally engaged in the extraction of aluminium oxide, electrolysis of virgin aluminium and the processing and production of aluminium as well as traded trading and engineering and technical services. Its primary listing is on the Shanghai Stock Exchange and it is a constituent of the SSE 180 index. It has a secondary listing on the Hong Kong Stock Exchange. The major shareholder of the company was Aluminum Corporation of China known as Chinalco (), a state owned enterprise. Organization The company has a number of distinct business segments including (1) alumina refining, (2) primary aluminum smelting, and (3) energy. The alumina refining segment consists of mining and purchasing bauxite, refining bauxite into alumina, and production and sales of alumina chemicals and metal gallium. The aluminum smelting segment smelts alumina to produce primary aluminum and also produces carbon products, aluminum alloy products, and other aluminum products. Finally the energy segment produces coal, generates electricity from coal, develops wind and solar power, manufactures new energy equipment, and integrates coal electricity generation with aluminum operations. Until 2013, it was also engaged in aluminum fabrication but has since sold this business line. History Aluminum Corporation of China (Chinalco) is a state-backed holding company established to be the primary aluminium producer in the People's Republic of China in 2001. It is the parent company of Aluminum Corporation of China Limited (Chalco) which is listed on the New York, Hong Kong and Shanghai stock exchanges. Effective from 10 June 2008, Chalco was added to the Hang Seng Index Constituent Stock (blue chip). In 2009, mining giant Rio Tinto declined a contemplated deal in which Chalco would pay $19.5 billion in order to increase its stake in Rio Tinto. Rio Tinto ultimately declined because "there are lots of Aussies in high political places who don't want ... land and resources sold to China." Along with the 2005 failed attempt by China National Offshore Oil Corporation (CNOOC) to buy Unocal Corporation (which ultimately sold to Chevron Corporation for $1.5 billion less than CNOOC's offer), the failed Rio Tinto deal was perceived in China as