The company was restructured and established in November 1998. Its predecessor can be traced back to the Qing Guangxu years, and it has a history of 139 years. It was listed and traded on the Shenzhen Stock Exchange in February 2000. It is owned by Yunnan Tin Industry Group (Holdings) Co., Ltd. and the only listed company in the domestic tin industry. The company's main business is exploration, mining, mineral processing and smelting of metal ores such as tin, zinc, copper, and indium. The company's main products and uses The company's current main products are tin ingots, cathode copper, zinc ingots, die-cast zinc alloys, indium ingots, tin materials and tin chemical products. Company honors: Listed company with the most investment value during the 12th Five-Year Plan period, the listed company with the most investment value during the 12th Five-Year Plan period, the 7th China Securities Market Annual Conference Golden Eagle Award, 2012 China's Top 100 Capital Brands for Listed Companies, “Xingzheng Cup 2010 China's Best IR Award for Wealth Creation”, “2012 China's Top 100 Capital Brands for Listed Companies”, etc.