Water-pipe valves in the nature of movable drain traps, not of metal or plastic; non-metallic bricks for paving; non-metal bricks; non-metal tiles; paving stones not of metal; roof flashings not of metal for construction for hydraulic insulation in the nature of non-metal building flashing; reinforcing materials, not of metal, for building; street gutters, not of metal; gutter pipes, not of metal; non-metal gates and panels for fences; non-metallic unlinked fences; non-metallic protective gui...