General business projects are: investment and establishment of industries (specific projects will be declared separately); door-to-door maintenance services of gearboxes, mining machinery and equipment, engineering machinery and their accessories (excluding motor vehicle maintenance); sales of gearboxes and accessories, environmental protection equipment, gearbox special oil and fuel oil (excluding refined oil); primary agricultural products (excluding rice, wheat, corn, tobacco and other items that are subject to special access management measures stipulated by the state), clothing, textiles, knitwear, daily necessities, Sales of stationery, sporting goods, building decoration materials, machinery and equipment, hardware products, electronic products, jewelry, handicrafts (except ivory and its products), mechanical equipment, hardware products, agricultural machinery and equipment, auto parts, motorcycles and accessories, electric lighting equipment, electric motors, automobiles (excluding cars), bicycles, computer software and auxiliary equipment; technology development of garbage disposal; construction engineering technology consulting; development of energy-saving technology; information transmission software, computer software, information system software Development and sales; information system design, integration, operation and maintenance; information technology consulting; integrated circuit design, research and development; information consulting (excluding talent intermediary services, securities, futures, insurance, financial services and other restricted items); enterprise management consulting (excluding restricted items); design and engineering of chemical petroleum engineering and environmental protection projects; domestic trade, engaging in the import and export of goods and technology (except for items prohibited by laws, administrative regulations, and decisions of the State Council, restricted items must obtain a license before they can be operated). (If the business operation involves pre-existing administrative licensing, it must obtain the pre-existing administrative licensing document before operating). Oil and gas technical services; sales of petroleum products (excluding hazardous chemicals); manufacturing of special equipment for oil drilling. ; Lubricating oil sales; refined oil wholesale (excluding hazardous chemicals). , the licensed business items are: production of automotive electronic products, transmission testing equipment (the above does not include restricted items); processing of metal products and non-metal products. Mining of mineral resources (non-coal mines). ;Retailing of refined oil products (excluding hazardous chemicals).