Mechanical and electrical equipment, mechanical equipment technology development, technical consultation, technical service, technology promotion, technology transfer: computer system integration, generic cabling: electronic and intelligent engineering, highway traffic engineering, building intelligent engineering, lightning protection engineering, security engineering, communication engineering, pipeline engineering, weak current engineering, environmental protection engineering, waterway engineering, airport road engineering, civil aviation air traffic management Engineering and airport weak current system engineering, airport visual aids engineering, steel structure engineering, communication engineering design and construction; mechanical and electrical equipment installation; sales: electronic products, communication equipment (excluding radio transmitting equipment), mechanical and electrical equipment, building materials, decoration materials, hardware and electrical equipment, fire fighting equipment, air conditioning, hotel equipment, kitchen equipment, office supplies, instruments and meters, automobiles, Auto parts, computer software and hardware, security equipment, household appliances, computers, elevators; elevator installation (business activities can be carried out after obtaining permission); packaging design: Engineering Survey and Design: import and export of goods and technology. (business activities can only be carried out with the permission of the licensed project according to law).<br>
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