Research and development of new metallurgical materials; sales of metallurgical equipment, instrumentation, mining equipment, electromechanical equipment, mechanical products and parts, metal materials and casting raw and auxiliary materials, belt-type and stepping-type sintering machines, belt-type and stepping-type cooling machines; manufacture, sales, and installation of metallurgical equipment, coking equipment, energy-saving and environmental protection equipment, mining equipment, electromechanical equipment, power equipment and accessories, and industrial automation systems; metallurgical engineering design and consulting; installation of steel structures for metallurgical engineering; manufacture, processing, and sales of locomotive and rolling stock parts; sales of locomotive and rolling stock cleaning agents; leasing of self-owned houses; road ordinary freight transportation; self-operated and agent-imported and exported goods and technologies. Licensed items: Electrical installation services. General items: Sales of machinery and equipment; installation services for general machinery; labor services (excluding labor dispatch).