Yaogangxian Tungsten Deposit, the birthplace of China’s tungsten industry, is the largest mine producing black tungsten concentrate in the country. It is located at the juncture of Yizhang County, Zixing City and Rucheng County of Chenzhou Region. Administratively, it is under the governance of Yizhang County. Now its stake is controlled by Hunan Nonferrous Metals Holdings Group Co., Ltd.

Its main business is mining and processing, producing tungsten concentrate, tin concentrate, copper concentrate and a small amount of associated silver.