wholesale、 retail: Mechanical equipment and accessories, Machine tool equipment and accessories, Hardware products, Electronics, computer、 Software and auxiliary equipment, Computer supplies, Building monitoring equipment, lamps, building materials, furniture, Home appliances, stationery, Sporting goods and equipment, Camera equipment, audio equipment, office equipment, medical devices, Auto Parts; Computer software technology development、 Technical Consulting, computer、 Office equipment repair; Integrated wiring; Data processing; Computer System Integration; Import and export business( Excluding goods under state-owned trade management)。( Projects that require approval according to law, Business activities can only be carried out after approval from relevant departments)