Yunnan Copper Co., Ltd. engages in copper exploration, mining, and smelting in China, as well as the extraction and processing of sulfur chemicals and rare and precious metals. It explores for gold, silver, lead, zinc, and other related mineral resources. The company offers cathode copper, gold, silver, industrial sulfuric acid, and rare and dispersed metals such as molybdenum, platinum, palladium, selenium, and tellurium under the Tiefeng brand. It also mines copper and associated precious metals, imports and exports goods, technologies, mineral products, and metal products, and sells coal, coke, rubber products, chemical raw materials and products, plastic products, and fuel oil, in addition to providing house, machinery, and equipment rental. Founded in 1958, Yunnan Copper Co., Ltd. is headquartered in Kunming, China.