Wholesale of electronic components; Electronic component manufacturing; Optoelectronic device manufacturing; Engineering and technology research and experimental development; Semiconductor discrete device manufacturing; Manufacturing of integrated circuit chips and products; Electronic special equipment manufacturing; Manufacturing of special equipment for semiconductor devices; Semiconductor discrete device sales; Optoelectronic device sales; Electronic special equipment sales; Sales of power electronic components; Manufacturing of power electronic components; Retail of electronic components; Integrated circuit chip design and service; Sales of integrated circuit chips and products; Integrated circuit design; Integrated circuit manufacturing; Integrated circuit sales; Research and development of electronic special materials; Electronic special materials manufacturing; Electronic special materials sales; Distribution switch control equipment manufacturing; Distribution switch control equipment sales; Sales of special equipment for semiconductor devices; Manufacturing of experimental analytical instruments; Sales of experimental analytical instruments; Electronic measuring instrument manufacturing; Sales of electronic measuring instruments; Semiconductor lighting device manufacturing; Semiconductor lighting device sales; Manufacturing of transformers, rectifiers and inductors; Standardized services; Sales of new energy raw power equipment; Electronic (gas) physical equipment and other electronic equipment manufacturing; Professional design services; Internet sales (except sales of licensed goods); Technical service, technology development, technology consultation, technology exchange, technology transfer, technology popularization; Software development; Science and technology extension and application services; Technology extension services; Educational consulting services (excluding educational training activities involving licensing and approval); Information technology consulting services; Information system integration services; Micro motor and component sales; Technology import and export; Import and export of goods; Advertising production; Advertising design and agency; Data processing and storage support services. (Except for the items subject to approval according to law, carry out business activities independently according to law with the business license).