Information technology consulting services;Retail of computer hardware and software and auxiliary equipment;Computer system services;Information system integration services;Software development;Development of basic software for artificial intelligence;Development of artificial intelligence application software;Technical services, technology development, technical consultation, technical exchange, technology transfer, and technology promotion;Data processing services;Basic resources and technology platform of artificial intelligence;Retail of hardware products;Wire and cable business;Sales of electronic products;Sales of communication equipment;Sales of radio, film and television equipment;Sales of metal products;Sales of mechanical equipment;Office supplies sales;Sales of office equipment consumables;Sales of instruments and meters;sales of household appliances;Sales of photocopying and offset printing equipment