Technical development, consultation, transfer, and service of computer software and hardware; Aerial spraying (spraying); Photography and camera services; Drone research and development, sales, and maintenance services; Conference services; Exhibition and display services; Planning of sports events and activities; Organize cultural and artistic exchange activities; Pest control services; Sales of stationery, sports goods, arts and crafts (excluding cultural relics), electronic products, environmental protection equipment, agricultural machinery and equipment, ordinary machinery and equipment, electromechanical equipment, engineering machinery and equipment and accessories; 3D image design and production; Big data processing; Advertising business; Wholesale of publications; Retail of publications; Corporate image planning; Corporate design; Enterprise management consulting services; Sales and installation of mechanical and electrical equipment; Construction engineering: Design and construction; Building construction; Residential interior decoration and decoration; Architectural decoration engineering; Building Intelligence Engineering