RPC

Concrete; concrete building elements, namely, concrete blocks, bricks, posts, slabs, panels; cement slabs; shuttering, not of metal, for concrete, namely, non-metal casting forms for concrete; cement pipes; gutter pipes, not of metal; balustrading; flashing, not of metal, for building; building materials, not of metal, namely, concrete beams, shutters, shingles, siding, building timber, building stone, building glass; buildings, not of metal, namely, transportable precast concrete buildings, portable non-metal buildings, prefabricated non-metal buildings