Nov 20, 2019 · Yunnan Copper (Yunnan Copper Industry Group)—500 kta. Established in 1958, Yunnan Copper is China's third largest producer of copperbased on total capacity. It's smelter in Qingyuan, Guangdong province, is a joint venture between Yunnan Copper and China Nonferrous Metals Group, which mainly processes blister from the Chambishi smelter in Zambia.
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