Yunnan Tin Co., Ltd. engages in the refined tin, tin-lead solder series products and deep processing of tin. It offers Non-ferrous metals, precious metals and their mineral products, chemical products, on-metallic and their mineral products, wholesale, retail, agent purchasing, consignment sales of building materials, import and export business, environmental protection engineering services. labor service, technical service, shaft excavation, development, production and self-sale of non-ferrous metal deep processing and high-tech products, overseas futures business, agency import and export business, sulfuric acid Production and sales. The company was founded on November 23, 1998 and is headquartered in Kunming, China.