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BEIJING, Feb. 1 (Xinhua) -- The Aluminum Corporation of China (Chinalco) and the U.S. aluminum producer Alcoa bought a 12 percent stake in the Britain-listed company of iron ore giant Rio Tinto on Friday, the biggest ever stock trading case in value.

The total price of the acquisition stood at 14.05 billion U.S. dollars, the largest overseas investment ever made by a Chinese enterprise, Xinhua learned from Chinalco on Friday.

Sources from Chinalco told Xinhua that a large portion of the total investment came from the Chinese side, but they declined to elaborate.

Lu Youqing, deputy general manager of the country's top non-ferrous metals producer, said that the deal was a "significant strategic investment" by Chinalco and the company saw good prospects for the fast-growing mining industry and the value of Rio Tinto. read more