6
Structures and transportable buildings of metal; Statues and works of art of common metals; Metal hardware; Building and construction materials and elements of metal; Unprocessed and semi-processed materials of metal, not specified for use; Doors, gates, windows and window coverings of metal; Containers, and transportation and packaging articles, of metal
19
Structures and transportable buildings, not of metal; Statues and works of art made of materials such as stone, concrete and marble, included in the class; Building and construction materials and elements, not of metal; Doors, gates, windows and window coverings, not of metal; Wood and artificial wood; Stone, rock, clay and minerals; Pitch, tar, bitumen and asphalt; Armour-plating, not of metal; Precast pavers
37
Rental of tools, plant and equipment for construction, demolition, cleaning and maintenance; Building, construction and demolition; Glazing, installation, maintenance and repair of glass, windows and blinds; Alarm, lock and safe installation, maintenance and repair; Plumbing installation, maintenance and repair; Lift and elevator installation, maintenance and repair; HVAC (Heating, ventilation and air conditioning) installation, maintenance and repair; Building maintenance and repair; Installation of prefabricated building elements; Office equipment installation; Office machines and equipment installation, maintenance and repair; Installation of grills; Erection of signboards; Erection of signs; Installation of doors; Installation of doors and windows; Installation of gates; Installation of racks; Installation of sun roofs; Roofing installation; Ceiling installation; Installing fencing; Furnace installation and repair; Furnace installation and repair; Office equipment maintenance
42
IT services; Science and technology services; Design services; Testing, authentication and quality control; Science and technology services