General items: Sales of special equipment for semiconductor devices; Semiconductor discrete device sales; Sales of electronic products; Sales of electronic special materials; Electronic special equipment sales; Electronic components wholesale; Mechanical equipment research and development; Semiconductor lighting device sales; Software development; Sales of industrial control computers and systems; Information security equipment sales; Professional design services; Wholesale of computer hardware, software and auxiliary equipment; Network equipment sales; Network and information security software development; Computer system services; Network technology services; Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination; Information system operation and maintenance services; Information system integration services; Sales agent; Internet sales (except sales of goods that require a license); Information technology consulting services; Domestic trade agency; Import and export of goods; Technology import and export