General projects: technical service, technical development, technical consultation, technical exchange, technology transfer and technology popularization; Internet sales (except the sale of goods that need permission); Electronic product sales; Retail of computer software and hardware and auxiliary equipment; Wholesale of computer software and hardware and auxiliary equipment; Software sales; Sales of electronic special equipment; Sales of electronic components and electromechanical components; Internet of things equipment sales; Sales of household appliances; Sales of electrical accessories; Retail of photographic equipment and telescopes; Information security equipment sales; Wholesale of electronic components; Sales of electronic special materials; Intelligent instrument sales; Sales of metal tools; Sales of daily necessities; Daily necessities sales; Daily sundry goods sales; Cosmetics wholesale; Cosmetic retail