The scope of business includes general business items: Sales of optical communication equipment; Sales of semiconductor lighting devices; Sales of household appliances; Domestic trade agency; Trade agency; Sales of optoelectronic devices; Retail of electronic components; Sales of electronic products; Development, technical consultation, technical exchange, technology transfer, technology promotion. (Except for projects subject to approval according to law, business activities can be carried out independently according to the law with a business license), and the licensed business projects are: Sales of second-class medical devices; Import and export of goods. (Projects subject to approval according to law can only be operated after being approved by relevant departments. The specific business projects are subject to the approval documents or licenses of relevant departments)