Wholesale of electronic components; Retail of electronic components; Sales of power electronic components; Sales of electronic products; Technology service, technology development, technology consultation, technology exchange, technology transfer and technology promotion; Domestic trade agency; Trade agency; Internet sales (except for the sale of goods requiring license); Sales of communication equipment; Sales of communication equipment; Wholesale of computer software, hardware and auxiliary equipment; Retail of computer software, hardware and auxiliary equipment; Wholesale of hardware products; Hardware products retail; Sales of office supplies; Network equipment sales; Sales of household goods; Sales of office equipment; Sales of electronic office equipment; Sales of new energy motive equipment; Battery sales; Sales of industrial automatic control system devices; Sales of industrial robots; Research and development of intelligent robots; Software development; Artificial intelligence hardware sales; Development of artificial intelligence application software; Basic software development of artificial intelligence; Intelligent robot sales; Computer system services.