19 Architectural concrete products, namely, prefabricated concrete panels; architectural concrete products for building purposes, namely, prefabricated concrete panels; articles of concrete for building purposes, namely, prefabricated concrete panels; building panels incorporating acoustic insulation not of metal; articles of concrete for construction purposes, namely, prefabricated concrete panels; bricks; building elements made of concrete, namely, prefabricated concrete panels; building elements of concrete, namely, prefabricated concrete panels; building elements of reinforced concrete, namely, prefabricated concrete panels; building materials not of metal, namely, prefabricated concrete panels; ceramic wall tiles; ceramic tiles for external walls; decorative ceramic tiles for walls; earthenware tiles; exterior cladding material made up of prefinished compressed fibre cement for construction and building; concrete; concrete sheets for construction; concrete articles for building walls, namely, prefabricated concrete panels; concrete building panels; concrete cladding panels for construction and building; concrete cladding sheets for construction and building; concrete constructional sheets; concrete facing panels and sheets for construction and building; concrete prefabrications, namely, prefabricated concrete panels; concrete products for use in building, namely, prefabricated concrete panels; concrete wall stone; constructional members of aerated concrete for use in building, namely, prefabricated concrete panels; non-metallic reconstituted adorning facing bricks; decorative mouldings, not of metal, for building; non-metallic building bricks; non-metallic facing bricks; non-metallic cladding for facades for construction and building; planar panels made of concrete; precast concrete building elements, namely, prefabricated concrete panels; preformed building panels made of concrete, namely, prefabricated concrete panels; preformed building panels made of concrete and foamed plastics; preformed building panels made principally of concrete; preformed concrete building elements, namely, prefabricated concrete panels; reinforced concrete; structural elements of concrete, namely, namely, prefabricated concrete panels; wall decorations of terracotta for use as building materials