Technical service, technology development, technology consultation, technology exchange, technology transfer, technology promotion; Sales of power electronic components; Sales of electronic products; Distribution switch control equipment sales; Distribution switch control equipment research and development; Wholesale of electronic components; Retail of electronic components; Semiconductor discrete device sales; Sales of special equipment for semiconductor devices; Electronic special equipment sales; Integrated circuit sales; Integrated circuit design; Retail of computer hardware, software and ancillary equipment; Wholesale of computer hardware, software and auxiliary equipment; Import and export of goods; Technology import and export; Battery parts sales; Battery sales; Auto parts retail; Auto parts wholesale; Intelligent vehicle equipment sales; Sales of electric accessories for new energy vehicles; Motor and control system development; Photovoltaic equipment and components sales; Sales of integrated circuit chips and products; Sales of industrial control computers and systems (except for items subject to approval according to law, independently carry out business activities according to law with business license)