The marketing of natural stone and artificial agglomerates in slabs, the marketing of processed and semi-processed natural stone and artificial agglomerates, the processing and laying of natural stone and artificial agglomerates for any final use (e.g. floors, coverings, stairs, furnishings including kitchen countertops, decorative items, building facades), including the necessary design, surveying, drawing and consulting. This includes sintered stones, recomposed quartz, ceramic materials and in general any synthetic material assimilable to stone, as well as mosaics and cobblestones. Any ordinary and extraordinary maintenance work on stone works, including repairs, restorations, aesthetic and protective surface treatments. This includes the supply and installation of any load-bearing structure or accessory element, even if not made of natural stone (e.g. metal structures).