Building, construction, repair and installation services, namely building and construction of houses and buildings, roads, bridges, railroads, airports, harbours and canals, transportation facilities, dams, power plants, pipelines, paving and asphalting, scaffolding, and trenching, concreting, masonry, glazing, steel construction, plastering, reinforcing, tiling, bricklaying, blocklaying, painting, sealing, roofing, metal plating, plumbing, carpentry, joinery, interior finish work being services in class 37, electric wiring, building insulating, drilling of wells; installing machinery, fixtures and fittings therefor; installation of elevators, lifts, fire alarms, burglar alarms, heating equipment, air conditioning apparatus, burners, boilers, pumps, refrigerating machines, and equipment, electronic central-processing computers, furniture, office machines and equipment; maintenance and repair of constructions, facilities, machinery, fixtures and fittings, construction machines and equipment; cleaning of outer walls of buildings, window cleaning, floor carpeting cleaning, floor polishing, cleaning of sewage treatment tanks

Real estate services, including real estate management, real estate appraisal, real estate lease and rental, real estate agency and brokerage, buying and selling of real estate, and real estate information