Technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion;Research and development of electronic special materials;Research and development of new material technology;Research and development of distribution switch control equipment;Research and development of mechanical equipment;Sales of intelligent vehicle-mounted equipment;Sales of intelligent instruments and meters;Sales of smart home consumer devices;Sales of electronic products;Sales of mechanical equipment;Wholesale of computer hardware and software and auxiliary equipment;Sales of integrated circuits;Sales of specialized equipment for semiconductor devices;Wholesale of electronic components;Sales of solar thermal utilization equipment;Sales of instruments and meters;Sales of lighting fixtures;Sales of navigation terminals;Internet plus sales (except for the sale of licensed goods);Sales of packaging equipment;Import and export of goods;Business agency services;Import and export agency;Sales agent;Procurement agency services;Domestic trade agency;Domestic freight forwarding.