6
Construction materials; Reinforcing materials for building; Building panels; Tile floorings; Grilles of metal; Ducts for ventilating and air conditioning installations; Ducting; Flooring tiles; Pipes; All the aforesaid goods made of metal
11
Apparatus for lighting, refrigerating, ventilating and sanitary purposes; Air reheaters; Filters for air conditioning; Air filtering installations; Heating apparatus for solid, liquid or gaseous fuels; Heating elements; Hot air ovens; Heating apparatus; Heating installations; Air conditioning installations; Air conditioning apparatus; Cooling appliances and installations; Air cooling apparatus and installations; Ventilation [air-conditioning] installations and apparatus; Fireplaces, domestic; Stoves [heating apparatus]
19
Building and construction materials; Rigid pipes for building; Reinforcing materials for building purposes; Building boards; Building stone; Concrete building elements; Buildings; Building materials for fire protection; Tile floorings; Clay (Potters' -) [raw material]; Paper and cardboard for building purposes; Stone; Terra cotta; Frameworks for buildings; Stairs; Stair-treads; Cladding parts for buildings; All the aforesaid goods not of metal
37
Building construction; Repair; Installation services; Building insulating; Heating equipment installation and repair, air conditioning and cooling