General business items are: Chip, electronic components, circuit board design and sales; Technical development and sales of security and communication supplies and equipment; Domestic trade (excluding commodities exclusively, exclusively or exclusively controlled); Import and export of goods and technology. (except for the items that are required to be approved before registration by laws, administrative regulations and decisions of The State Council); Corporate headquarters management; Enterprise management; Enterprise management consulting; Market research (excluding foreign-related research); Trade brokerage; Information consulting services (excluding licensed information consulting services); Technical service, technology development, technology consultation, technology exchange, technology transfer, technology dissemination. (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: Technical development and sales of medical supplies and equipment.