37 Building construction; infrastructure construction, namely, construction of airports, vertiports, aircraft hangars, vehicle hangars, airport runways, passenger terminals, cargo terminals, plane stands, air traffic control towers, launching platforms for aircraft and drones, buildings, elevators, lifting platforms for vehicles, self-levelling systems, electric vehicle charging stations, refuelling stations and parking lots; aviation infrastructure construction, namely, construction of airports, vertiports, aircraft hangars, vehicle hangars, airport runways, passenger terminals, cargo terminals, plane stands, air traffic control towers, launching platforms for aircraft and drones, buildings, elevators, lifting platforms for vehicles, self-levelling systems, electric vehicle charging stations, refuelling stations and parking lots; airport construction; construction, maintenance and repair of buildings, airports and power plants; installation of roofing, plumbing, lighting, lifts, elevators, lifting platforms for vehicles, self-levelling systems, building insulation, ventilating apparatus, doors, windows, water supply apparatus, power generating apparatus, heating apparatus, power management and energy systems, on-grid and off-grid charging, air-conditioning apparatus, all being part of buildings, airports and power plants; insulating, being installation of insulating materials, and sealing of buildings and airports; damp-proofing of buildings and airports; cleaning of buildings and airports; demolition of buildings and airports; plastering, plumbing, interior and exterior painting; masonry; building and airport construction supervision and maintenance; building and airport construction management services; building and airport site management services; installation, maintenance and repair of communications apparatus and networks, computer apparatus and networks, elevators, fire alarms, furniture, office equipment, office machines, all the foregoing excluding computer software; installation, maintenance and repair of airport runways, plane stands, passenger terminals, cargo terminals and air traffic control towers; information, advisory and consultancy services relating to the aforesaid services