[ NON-METAL BUILDING MATERIALS, NAMELY, CEILING AND DOOR PANELS, PLASTER AND PLASTER BOARDS; NON-METAL BUILDING COMPONENTS, ESPECIALLY IN PANEL OR BLOCK FORM, NAMELY, WALL PANELS, BRICKS AND CONCRETE BLOCKS; NON-METAL SPACING AND PROTECTIVE RAILING FOR BUILDING PURPOSES; NON-METAL CLADDING FOR BUILDING PURPOSES; BUILDING MATERIALS, NAMELY, POLY VINYL CHLORIDE AND POLYSTYRENE PIPE SUPPORTS FOR WATER SUPPLY AND DRAINAGE; NON-METAL PARTITION WALLS, BASES, SKIRTING, CONCEALING HOUSINGS, GUTTERIN...