Li Gang Gan

Hunan Yaogangxian Mining Co. Ltd. engages in mining, processing, and distribution of tungsten ores. Its business scope includes Tungsten mining, and non-ferrous metal geological exploration, selection, smelting, processing, sales, and transportation. The company was founded on October 31, 2005 and is headquartered in Chengzhou, China.

Minmetals Tungsten Industry Group Co., Ltd. engages in the sale of metal and non-metal ores. It offers metal materials, mechanical equipment, electrical equipment, electronic products, and chemical products. It also provides technology development, consulting, transfer, and import and export services. The company was founded on September 26, 2018 and is headquartered in Beijing, China.

Peking University provides post-secondary education services. It offers undergraduate and graduate courses. It provides courses such as basic and applied sciences, social sciences and the humanities, sciences of medicine, management, and education. The company was founded by JiaNai Sun in 1898 and is headquartered in Beijing, China.

China Nonferrous Metals Industry Association was founded in 1993. The non-profit company is based in Beijing, China and has subsidiaries in China. The Chinese company's description is "?????????", which translates to "China Nonferrous Metals Industry Network".