19 Building materials, not of metal namely, bricks; bricks and goods made therefrom, namely, unfired bricks, fired bricks; paving stones; concrete blocks; glass blocks for building; Glass tiles; concrete road paving boards; facade bricks; ceramic stacking bricks for use in refractory furnaces; constructions, transportable, not of metal, namely, portable non-metal buildings; prefabricated non-metal walls and structural parts therefor; mortar for building; concrete building materials, namely, brick strips; stone and natural stone tile for building; stone and natural stone tile for covering wall panels; wall claddings, not of metal, for building; prefabricated facade panels for construction, not of metal; insulating wall panels for building, not of metal; facade panels finished with brick strips for construction purposes, not of metal; clay pavers; tiles, not of metal, for floors, paving, roofs; roof tiles, not of metal; Adhesive mortar anchorings, not of metal, for use in masonry