The general business items are: computer software, information system software development and sales; Information system design, integration, operation and maintenance; Information Technology Consulting; Integrated circuit design, research and development. Business information consultation (excluding restricted items); Economic information consultation (excluding restricted items); Business management consulting (excluding restricted items); scientific and technological information consultation; sales of mechanical equipment, hardware products, electronic products, communication equipment; System integration of radio and peripheral equipment, multimedia products and sales of wireless data products (excluding restricted items); operating e-commerce; Domestic trade (excluding franchised, monopoly and exclusively controlled commodities); Operate import and export business (except for projects determined by laws, administrative regulations and the State Council, restricted projects can only be operated after obtaining permission); wholesale and sales of stationery (excluding publications) and sporting goods; wholesale and sales of building materials; Wholesale and sales of machinery and equipment, hardware products, electronic products; wholesale and sales of jewelry and handicrafts (excluding ivory and its products); operating e-commerce; Sales of primary agricultural products, fruits, vegetables, aquatic products. (Except for items prohibited by laws and administrative regulations; The projects restricted by laws and administrative regulations can only be operated after obtaining a license), and the licensed business projects are: sales of Class II medical devices; Sales of masks and protective equipment.