Tianyun Coal Mine Co., Ltd. is located in Hengshan county, Yulin City, Shaanxi Province.The current production capacity of the mine is 600000 tons, the planned production capacity is 900000 tons, the mining area is 67.12 square kilometers, and the reserves are 130 million tons. The product has the characteristics of low ash, low moisture, ultra-low sulfur, medium phosphorus and high calorific value. It is a good coal for power, blending coking and low-temperature carbonization of coal. Due to the excellent quality of the product, it has been maintaining a good profitability for several years. At present, as the main body of resource integration, the company has started the construction of New Tianyun Coal Mine.