Non-metallic building materials, namely, concrete blocks and slabs; building materials made of plastics, namely poles, posts and panels; wood or wood based building materials, namely, beams, boards, chip boards, backing boards for laminated floors, posts, panels, shuttering panels, and concrete form work; non-metallic boards and non-metallic foils, with plastic laminate or veneer laminate surface coatings, for use as building materials; and non-metallic floors, namely, laminated floors