Technology development, technical consultation, technical service, design, integration and operation maintenance in the fields of computer software, information systems, electronic products, Internet, cloud computing, new media, Internet of Things, artificial intelligence, online games, information technology and communication technology; Logistics information consulting; Enterprise management consulting; Sales of clothing, shoes and hats, outdoor goods, communication equipment, digital products, electronic products, online games, bedding, toys, computer hardware and software and multimedia products, and second-class medical equipment; Operating electronic commerce; Engaged in advertising business; Domestic trade; Engaged in import and export business. Non-residential real estate leasing; Office equipment rental services; Computer and communication equipment rental; Intellectual property services; Home appliance sales. (In addition to the items subject to approval according to law, independently carry out business activities according to law with the business license), the permitted business items are: Sales of masks, thermometers, disinfectants, protective clothing, general diagnostic equipment, medical electronic instruments and equipment.