The business scope includes general business items: general equipment manufacturing (excluding special equipment manufacturing); Manufacturing of terminal test equipment; Terminal test equipment sales; Maintenance of electronic and mechanical equipment (excluding special equipment); Laser marking processing; Painting equipment sales; Mechanical equipment research and development; Machinery and equipment leasing; Computer hardware and software and ancillary equipment retail; Sales of electronic products; Communication equipment manufacturing; Communication equipment sales; Domestic trade agent; Hardware products manufacturing; Hardware products retail; Technical services, technology development, technology consultation, technology exchange, technology transfer and technology promotion; Daily household appliance retail; Daily general merchandise sales; Sales of household appliances; Home appliances parts sales; Semiconductor device special equipment manufacturing; Semiconductor discrete device manufacturing; Semiconductor lighting device manufacturing; Semiconductor lighting device sales; Semiconductor device special equipment sales; Semiconductor discrete device sales; Sales of Class I medical devices; New energy primary equipment manufacturing; New energy vehicle sales; New energy vehicle electric accessories sales; New energy vehicle electric changing facilities sales; New energy primary equipment sales; Research and development of emerging energy technologies. (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 type II medical devices; Import and export of goods; Technology import and export.