Ready-mix cement and concrete; Non-metallic building materials, namely, cement, concrete, mortar for building, stones, lime, gypsum for use as building materials, gravel, non-metal floor tiles, non-metal partitions for building, bricks, tiles, not of metal, for building, non-metal mosaic tiles for building, non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings, namely, modular pre-fabricated buildings, non-metal building panels, non-metal precast building columns, and non-metallic monuments