... polished tiles), timberGranite, marble, sand stone (cautious for black stone)Granite, marble, sand stone, microcrystal stone, ceramic tiles, polished tiles and ... machine, polishing padCorrosionStrong alkali de-waxing agent dissolves stone, mica and metal ionsSteel wire will be heated ... , which permeates on the stone, forms iron rust or yellow spot, leads to stone bleaching.It’s a neutral ...