Non-metallic, prefabricated modular buildings; prefabricated non-metallic buildings; non-metallic modular units for constructing prefabricated buildings, namely, bricks and concrete walls; non-metallic building materials, namely, bricks and concrete walls; rigid pipes, not of metal; buildings, transportable, not of metal; doors, gates, windows and window coverings in the nature of shutters, not of metal; building timber; wood boards for building; non-metal roofing; non-metallic roof construct...