Building materials, not of metal; non-metallic construction materials; plastic mats for paving; plastic stabiliser mats for paving; plastic permeable mats for paving; modular plastic mats for paving; non-metallic materials and components for stabilisation, surfacing and reinforcement of ground; plastic conduits for drainage and irrigation; pavements, not of metal; non-metallic paving blocks; paving tiles; paving stones; paving slabs, not of metal; reinforcing materials, not of metal, for buil...