ROCLA

[non-metallic building materials; namely, concrete building blocks, pavers and tiles, precast concrete wall panels, non-metallic bridging components; namely, precast concrete beams, curbs, abutments, railings, safety barriers, piles and foundations; non-metallic poles for carrying electric lines; namely, concrete power poles; non-metallic rigid pipes for building; concrete pipes; concrete safety crash barriers for roads;] concrete railway sleepers and ties