19
Components of glass, plastic and wood for houses and halls, and houses and halls constructed therefrom; façade elements of glass, plastic and wood; building glass; windows of glass or plastic with frames of wood, plastic; window parapets and doors of wood, plastic or glass; wall elements and panelling and internal wall elements of wood, glass, stone, for partitioning and finishing rooms; floor, ceiling and roof elements of glass, plastic and wood; roof trusses of glass, plastic and wood; roof constructions of glass, plastic and wood; tiles of stone, plastic, wood, glass; staircases and staircase components of glass, plastic and wood; light components of wood; preserved wood for roof trusses; parts of glass, plastic and wood, for huts; site huts of glass, plastic and wood; roller shutters of wood and plastic; prefabricated foundations of concrete and stone; prefabricated bridge components of stone, concrete and wood; wall elements, panelling and internal wall elements of carbon (not of metal), for partitioning and finishing rooms (except furniture); cleaning material of plastic and mineral substances in the form of coating compounds; letter boxes and other containers of masonry; boards for building (not of metal), building materials; non-metallic transportable buildings
37
Construction, repair, servicing and maintenance of buildings and parts thereof, in particular houses, halls and prefabricated components; repair, maintenance of heating, air conditioning, refrigerating and ventilating apparatus, electric installations, including high-voltage and low-voltage installations and alarm installations, including computer-aided installations
42
Architecture; construction and design planning and consultancy; engineering services; design of buildings and parts therefor, in particular houses and halls made from prefabricated components; design and planning of heating, air-conditioning, refrigerating and ventilating apparatus, electric installations, including high-voltage and low-voltage installations and alarm installations, including computer-aided installations; providing of expert opinion; drawing up air-conditioning tests and analyses; wooden construction engineering