Licensed projects: Construction engineering design, various engineering construction activities, special equipment manufacturing, special equipment installation, transformation and repair, import and export of goods, technology import and export, import and export agency, food business, import and export of gold and its products (projects that require approval according to law can only be carried out after being approved by relevant departments, and specific business projects are subject to the approval results) General projects: Foreign contracting projects, engineering management services, Research and development of mechanical equipment, engineering and technical services (excluding planning management, survey, design, and supervision), sales of mechanical equipment, sales of mechanical parts and components, installation services for ordinary mechanical equipment, leasing of mechanical equipment, sales of special equipment, manufacturing of material handling equipment, sales of material handling equipment, sales of intelligent material handling equipment, sales of intelligent port loading and unloading equipment, and manufacturing of special equipment (excluding licensed professional equipment manufacturing), Sales of metallurgical specialized equipment, environmental protection specialized equipment, mining machinery, shipbuilding supporting equipment manufacturing, metal structure manufacturing, metal structure sales, general equipment manufacturing (excluding special equipment manufacturing), general equipment repair, special equipment repair, electrical equipment repair, metal ore sales, industrial textile products sales, high-performance non-ferrous metals and alloy materials sales, and non-ferrous metal alloy sales, Grain sales, sales of beans and potatoes, wholesale of computer software and hardware and auxiliary equipment, retail of computer software and hardware and auxiliary equipment, sales of Class II medical devices, sales of renewable resources, domestic trade agency (except for projects that require approval according to law, operating activities independently based on business license according to law)