Those prohibited by laws, regulations and decisions of the State Council shall not operate; If the license (examination and approval) is required by laws, regulations and decisions of the State Council, the business shall be operated on the basis of the license (examination and approval) documents after being approved by the examination and approval authority; If the laws, regulations and decisions of the State Council stipulate that there is no need for permission (examination and approval), the market entities shall choose to operate independently. (computer software and hardware technology research and development, technology transfer and technical services; Computer software and hardware sales; Sales of electronic products, clothing, shoes and hats, textiles, office supplies, household supplies, handicrafts, daily necessities, digital products, washing supplies and cosmetics; E-commerce services; Import and export of goods and technologies; Data processing and storage support services; Blockchain technology development; Information system integration services; Internet of things technical services Technology promotion; Value added telecommunication services; Information system operation and maintenance services; Computer and communication equipment leasing, server hosting services. (for projects subject to approval according to law, business activities can be carried out only after approval by relevant departments)