Caozhuang Coal Mine is the backbone enterprise of Shandong Feicheng Mining Group Company and Dongyue Energy Co., Ltd. Completed and put into operation in 1965, it is a large-scale modern mine with an annual output of more than one million tons and 900,000 tons of clean coal. The coal types are gas coal and gas-fertilized coal. The "Jieyu" brand of high-quality environmentally friendly coal registered with the National Trademark Office is a high-quality coal type with low sulfur, low phosphorus, high volatile matter and high calorific value. It mainly includes raw coal, clean coal, thermal coal, lump coal, coal slime and other series. Products are widely used in metallurgy, electric power, chemical industry, building materials and other industries, among which clean coal and thermal coal are exported to Japan, Brazil and other countries and regions.