Software development; Technical services, technological development, technical consultation, technical exchange, technology transfer, technology promotion; Information system integration services; Computer system services; Internet of Things application services; Health consultation services (excluding diagnosis and treatment services); Sales of Class I medical devices; Sales of Class II medical devices; Retail of computer hardware, software, and auxiliary equipment; Wholesale of computer hardware, software, and auxiliary equipment; Sales of electronic products; Sales of household goods; Internet sales (excluding the sale of goods requiring licenses); Domestic trade agency; Import and export of goods; Import and export of technology; Import and export agency (excluding items that require approval according to law, and business activities shall be carried out independently according to law with a business license); Operation of Class III medical devices; Internet information services for medical devices