19 PLASTER, DRY PLASTER, PLASTIC PLASTER AND CONCRETE; WALL, AND FACADE PLASTER, HEAT, SUPERIOR, FINE, WASHABLE, INTERIOR AND COLORED STONE PLASTER; NATURAL AND ARTIFICIAL ROCKS; PANELING PLATES USED IN CONSTRUCTION; FACADE, ROOF, FLOOR AND CEILING PLATES; CEMENT AND MOSAIC PLATES; STONES FOR USE IN CONSTRUCTION, BRICKS, ROOFING TILES, CEMENT, SAND, GRAVEL, CONCRETE, MINERAL CONCRETE ADDITIVES, LIME, GYPSUM, ASPHALT, PITCH, BITUMEN, BITUMINOUS COATING MASSES