Non-metallic building materials, namely, tiles, blocks and slabs of ceramic, slate, natural stone, travertine, granite and marble; non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal

Non-metallic building materials, namely, tiles, blocks and slabs of ceramic, slate, natural stone, travertine, granite and marble; non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments of stone, concrete and marble