Class 019
Non-Metallic Building Material Products
Shaped blocks and other prefabricated components of concrete for the design of roads, squares, gardens and landscapes, in particular plant rings, paving blocks, interlocking paving stones, kerb stones, border stones, bricks, palisade posts, prefabricated stair treads (steps) and platforms, water drainage channels, floor boards, cover plates for walls, not of metal; Natural stone.