The general business items are: Retail of electronic components; Sales of electronic components and electromechanical components; Sales of power electronic components; Retail of hardware products; Wholesale of electronic components; Category II medical device retail; Optical fiber sales; Internet sales (except for the sale of goods that need to be licensed); Sales of electronic products; Sales of electronic office equipment; Sales of optoelectronic devices; Sales of mechanical equipment; Domestic trade agency; Integrated circuit sales; Sales of integrated circuit chips and products; Sales of special equipment for environmental protection; Sales of semiconductor lighting devices; Sales of discrete semiconductor devices; Retail of photographic equipment and telescope; Professional repair of radar and radio navigation equipment; Cloud computing equipment technical services. (In addition to the items that need to be approved according to law, the business activities shall be carried out independently according to law with the business license), the permitted business items are: Technology import and export; Import and export of goods. (Projects that need to be approved according to law can only be operated with the approval of relevant departments. The specific operation items shall be subject to the approval documents or licenses of relevant departments)