Non-metal building materials, namely, walkways being prefabricated building panels, masts being pillars, planks, stringers being stair treads; non-metallic spars for use in building, namely, struts being concrete poles for use as building materials; non-metal flooring; flooring compounds of synthetic resins, namely, non-metal synthetic resin slabs, panels and blocks for flooring for buildings; bridges and bridge units, namely, prefabricated non-metal bridges; non-metallic building materials, ...