Building materials as finished products made of concrete, gypsum, clay, potters' clay, natural or artificial stone, wood, plastics and synthetic materials for building, construction, road construction purposes, included in this class, namely, pavement tiles, blocks, bricks, panels, boards; portable and prefabricated non-metallic buildings; non-metallic building materials, namely, fiberglass panels, floor boards, fascia, plywood, plywood board; non-metallic transportable buildings; poles not o...