Design, production, repair, and service of avionics, curtain walls, doors and windows, building materials, special vehicle equipment, general vehicles and logistics equipment; sales of developed products; aviation technical equipment, aircraft maintenance; architectural decoration; aluminum doors and windows, curtain walls, civil engineering construction; metal structures, machinery, garment manufacturing; non-standard equipment, high-altitude hoisting, deep processing of glass; oxidation treatment; building materials sales; fluorocarbon spraying; air conditioning engineering installation; advertising design, production, and publication; TV tower technical consulting; curtain wall cleaning. Concurrent business: contracting of overseas projects and domestic international bidding projects and export of required equipment and materials; dispatching labor personnel for engineering, production, and service industries (excluding seafarers); export of self-produced products and related technologies, import of raw materials, mechanical equipment, instruments, meters, spare parts, and related items needed for production and scientific research, as well as processing with imported materials and ‘three processing and one compensation’ business; research and development, technical consulting, technology transfer, and sales of computer software, hardware, and peripheral equipment; system integration and network engineering construction. Items operated by licensed branches: Chinese cuisine, accommodation services; automobile repair; vehicle refueling management; retail of lubricating oil, ethanol gasoline, high-grade gasoline, and diesel (this scope is for branch use only).