General items: Sales of photovoltaic equipment and components; Battery sales; Technical services for solar power generation; Sales of semiconductor lighting devices; Sales of mechanical and electrical equipment; Sales of electronic products; Wholesale of electronic components; Retail of electronic components; Research and development of special electronic materials; Toy sales; Luggage sales; Luggage repair service; Clothing wholesale; Clothing retail; Wholesale of shoes and hats; Retail of shoes and hats; Sales of communication equipment; Repair of communication equipment; General merchandise sales; Sales of household appliances; Sales of office supplies; Stationery retail; Stationery supplies wholesale; Retail of auto parts; Technical service, technical development, technical consultation, technical exchange, technology transfer and technology promotion; Import and export of goods; Technology import and export. (In addition to the projects that need to be approved according to law, the business activities shall be carried out independently according to law with the business license)