19 Asphalt, tar, bitumen, pitch; materials for building, surfacing and repair of roads, sand, gravel, mosaic, slag, dry aggregates comprised of natural materials such as stone, sand gravel, aquarium sands, varieties of lime, cement, gypsum, prepared concrete, prepared mortar, prepared plaster, prepared color plaster, natural stones, artificial stones, natural marbles, artificial marbles, interior and exterior wall coverings made of natural or artificial stones, residential and floor coverings: tiles, wall tiles, floor tiles, ceramics, pavement stones, bordering stones, concrete panels, concrete pipes; concrete tubes and coupling elements, panels, walls, joists, and columns; roofing elements, prefabricated structures made of concrete, portable structures made of concrete, concrete poles; fence posts; concrete utility poles, communications and other lines; concrete barriers, mooring posts, panels made of plaster; boards, walls, dividers; prefabricated structural elements made of plaster, bricks, roofing tiles, ribbed tiles, brick tiles, crown tiles, asbestos pipes, tubes and coupling components, non-metallic; traffic signs, non-luminous and non-mechanical, not of metal, for roads; monuments and statues made of concrete, stone and marble; transportable and prefabricated buildings made of wood; carpentry elements: wooden doors, windows, and door and window casings; blinds, Venetian blinds, shutters, paneling, wooden cabinets, cabins, sheds made of wooden material, wooden floor tiles; plywood and particle board products, semi-processed lumber, wooden poles, pieces, boards, planks, joists, removable and re-installable structures and prefabricated structural elements made of plastic and synthetic materials, floating platform made of plastics, pontoon systems made of plastics, offshore cage systems made of plastics; plastic joints, cabinets, cabins, plastic doors, windows, and door and window casings, buoys, barriers; construction piping and components made of hard plastics: drainage pipes, rain sluices, gooseneck pipes, couplings, Venetian blinds, shutters, louvres; natural or synthetic surface coverings in plate or strip form; synthetic coverings that can be glued by heat; glass products for building construction; glass plates, double-glazed glass plates, glass sheets for roofs, glass bricks, glass panels, glass tiles; tarred paper for roofing; tarred coverings; non metallic prefabricated swimming pools