19 Building materials, not of metal, namely, fiberglass panels, floor boards, fascia; bricks and goods made therefrom, namely, commemorative bricks, fired bricks, fireplace bricks; paving stones, concrete blocks, glass blocks for building and tiles, namely, earthenware tiles, ceramic enamel tiles, non-metal floor tiles, concrete paving materials, namely, concrete paving stones, concrete paving tiles; bricks for use on building facades; constructions, transportable, not of metal, namely, portable non-metal buildings; prefabricated non-metal walls and structural parts therefor; mortar, namely, mortar mix, cement mortar slates; stone and natural stone, in particular for building; stone and natural stone for covering wall panels; wall claddings, not of metal, for building; prefabricated facade panels for construction purposes, not of metal; insulating wall panels for building, not of metal; facade panels, not of metal for construction purposes; clay pavers; tiles, not of metal, for floors, paving, roofs; roof tiles, not of metal