Enterprises know that data show that coal wholesale; Coal mining, washing and processing; Mine and highway engineering construction; Construction and installation engineering construction; Property management, labor export, accommodation and medical services; Crops, forest planting, flower seedling planting and sales; Manufacture, processing and repair of mine special equipment and accessories; Production of coal gangue bricks and building blocks; Wood sales (the above items are limited to branches); Sales of mechanical equipment and accessories, Wujinjiaodian, electronic products, chemical products (excluding dangerous goods), metals, iron ore, building materials, daily necessities, ceramics, rubber and plastic products, lubricating oil, and textiles; Manufacture, processing and repair of mechanical equipment and accessories; Technical consulting services for coal mining and flower and seedling planting; Rental of houses and equipment.