Wangjiashan Coal Mine in Jingyuan County was established in 1990, located in Baiyin City, Gansu Province. Is an enterprise mainly engaged in coal mining and washing, with an annual production capacity of over 3 million tons, advanced coal mining and processing equipment and high coal mining efficiency and quality.

Xiaozhuang Coal Mine in Chang Bin: Located in Binxian County, Xianyang City, Shaanxi Province, it is a small coal mining enterprise. Its main product is bituminous coal, which has a large annual production capacity and advanced mining equipment and technology, and has a certain influence and popularity in the industry.