Chemicals used in industry, namely, low density slurries used in oil and gas operations

Non-metallic building materials, namely, cement slabs, mixes containing cement, concrete mixes, concrete building elements, concrete building slabs and panels, paving blocks, paving slabs, bricks, blocks, tiles, cement render, non-metal mouldings for buildings, non-metal mouldings for cornices, artificial stone, mortar for building and concrete beams; concrete and stone busts, calcareous marl and stone or concrete, fireproof coatings of cement, stone or concrete balustrading, figurines of sto...