19 Non- metallic building materials, namely, porcelain slabs; non-metal cladding for construction and building, namely, Panels, paving slabs, floor tiles, tiles, slabs, planks and porcelain slabs for facades, buildings, roofs, walls and floors; Non-metallic cladding materials for construction and building; Prefabricated plates of ceramics and porcelain for the cladding of all kinds of constructions; Paving blocks made of non-metallic materials; Paving and surfacing of ceramic, sandstone, porcelain, natural or artificial stone, synthetic stone and wood; Wall tiles, paving slabs, floor tiles and tiles of sandstone, ceramic, natural or artificial stone, porcelain, concrete, marble and wood; Marble for construction; Slabs of ceramic, porcelain and marble; Surfacings, not of metal, for stairs; Building glass; Shutters made of non-metallic materials; Non-metallic facing tiles for use in buildings; Glass panels for windows and doors for building and construction purposes; Mouldings, not of metal, for building; Non-metallic transportable buildings; Chimneys, not of metal; Construction materials, namely, Lengthening pieces, not of metal, for chimneys; non-metal Coverings for chimney walls; Fire surrounds, namely, mantles and mantlepieces of stone; Chimney pots, not of metal; Balustrades, not of metal; Non-metallic blocks for construction; Construction materials, namely, Domes and coving bases, not of metal; Soundproof hoods, structures, not of metal for mounting solar panels