19 Processed marble; processed stone; marble for building; wall tiles, not of metal, for building; tiles, not of metal, for building; marble; tiles of marble; rock materials for use as cladding; construction materials for floor, not of metal; floor tiles, not of metal; rock materials for use in the construction of walls; rock materials for use in the construction of fireplaces; non-metal floor panels; flooring, not of metal; floors, not of metal; artificial stone; artificial stone tiles; landscape stone; processed paving stones; paving stone.