Non-metallic building materials, namely, non-metal boards and blocks for building; non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; non-metallic monuments; non-metallic framed conservatories in the nature of prefabricated non-metal sunrooms and buildings, non-metallic doors and windows; non-metallic supports, namely, construction elements not made of metal, namely, supports; non-metallic tree gratings for draining thoroughfares; non-meta...