Non-metallic building materials, namely, plastics, resins and laminates in board and panel form; non-metallic transportable buildings; non-metal floating docks; mouldings not of metal for building; non-metal mooring bollards; non-metallic posts; non-metal masts; silica cement for use in building; building glass; laminated building glass; non-metallic reinforcements for building, namely, plates, rods and bars