non-metal building products, namely, exterior and interior sidings for building; building materials, namely, non-metal ceiling coverings, non-metal roof coverings and non-metal wall coverings; claddings for building, not of metal; non-metal decorative moldings for use in building construction, not of metal; plaster sidings for building, not of metal; flashings for building, not of metal; fire-resistant boards and panels for building, not of metal; wall claddings for building, not of metal; wall boards for building, not of metal; exterior claddings for building, not of metal; non-metal decorative moldings and decorative trim for use in building construction; non-metal partitions for building; building panels, not of metal; ceramic panels for building; stair treads, not of metal; claddings for construction and building, not of metal; non-metallic materials for exclusive use in building and construction, namely, synthetic stones and artificial marble for use in wall panels, chair rails and floors; building materials, not of metal, namely, synthetic stones and artificial marble for use in wall panels, chair rails and floors; exterior/interior wall boards, not of metal; exterior/interior wall panels, not of metal; exterior/interior wall claddings, not of metal; refractory construction materials, not of metal; non-metal floor panels; construction materials, namely, non-metal flooring materials; non-metal floors; scaffolding, not of metal; wall panels, not of metal; wall boards, not of metal; partitions for building, not of metal; [ building panels, not of metal; ] non-metallic building materials designed to conserve energy in the form of concrete slabs; non-metal facing sheets of plywood, plaster facing for building; Refractory materials, namely, refractory blocks for building construction; Refractory materials, namely, refractory bricks for building construction; Refractory materials, namely, refractory concrete for building construction; non-metal floor tiles; non-metal roofing tiles; non-metal wall tiles for building; tiles, not of metal, for building; fireproof tiles; ceramic tiles for flooring and lining; ceramic tiles for flooring and facing; tiles of ceramic for wall, floor or ceiling; tiles of ceramic for walls; refractory construction materials for building, not of metal; wall tiles, not of metal; ceramic floor tiles; ceramic tiles; artificial stone tiles; porcelain tiles; ceramic tiles for ceiling; ceramic tiles for tile floors and coverings