19 NON-METALLIC BUILDING MATERIALS, NAMELY, SOFFITS, SEMIWORKED WOODS, STONE, GRAVEL, CONCRETE, CEMENT MIXES, CERAMIC TILES, RUBBER COVE BASES, RUBBER FLOOR TILES, RUBBER FLOORING, PLASTIC CONDUIT FOR DRAINAGE AND IRRIGATION, PLASTIC FLOORBOARDS, PLASTIC TILES, PLASTIC WALLBOARDS, PLASTIC WATER CONDUITS FOR ROOFS AND BALCONIES, WOOD BEAMS, WOOD BLOCKS, WOOD BOARDS, WOOD DOOR FRAMES, WOOD JOINTS, WOOD JOISTS, WOOD MOLDINGS,WOOD PANELING, WOOD POLES, WOOD POSTS, WOOD RAFTERS, WOOD SIDING, WOOD TILE FLOORS, WOOD TRIM, WOOD VENEER, WOOD WINDOW FRAMES, WOOD-FIBER REINFORCED CEMENT BOARDS IN THE NATURE OF CEMENT EXCELSIOR BOARDS, PLASTER, LIGHTWEIGHT AGGREGATED CONCRETE FOR USE AS SCREED, CLAY PIPES AND CONDUITS, CLAY TILES, BITUMEN ASPHALT; NON-METALLIC RIGID PIPES FOR BUILDING; ASPHALT, PITCH AND BITUMEN ASPHALT; NON-METALLIC TRANSPORTABLE BUILDINGS; NON-METALLIC MONUMENTS OF STONE, CONCRETE, CEMENT, CERAMIC, AND LIGHT WEIGHT AGGREGATED CONCRETE