19 Asphalt, tar, bitumen, pitch; tar coatings for use on roads and pavements; sand, gravel, mosaics made of natural stone and stone tile and stone chips, sandstone; cement aggregates prepared from natural materials such as sand, gravel, sandstone; non-agricultural lime for use in construction; cement; plaster; ready mixed concrete, ready mixed mortar for building, ready mixed plaster, ready-mixed colored plasters; natural stones, artificial stones; natural and artificial marble as building material; ceramic tiles for tile floors and coverings, paving stones, curbstones; concrete, namely, panels, walls, beams and columns, and roof coverings; pre-fabricated non-metal structures made of concrete; mobile structures made of concrete; poles made of concrete for use as building material, non-metal fence posts; non-metal posts for electric power lines; non-metal fencing in the nature of an industrial safety barrier; concrete bollards; panels made of plaster, plaster boards; plaster stops for reinforcing plaster in the corners of plastered walls; non-metal partitions for buildings, construction elements, not made of metal, namely, supports; bricks, tiles, of metal, not for building, cement fillers for use in building; binding agents, namely, building material for making briquettes, tiles, not of metal, for building, namely, ridge tiles