... grinding and polishing concrete, marble,granite, terrazzo, but also for repairing, grinding, polishing, crystallizing millstones.grinding and polishing ... stainless steel.Ideal for:1, For coarse grinding, medium grinding, fine polishing, crystallization, preparation, maintenance.2, Polish ... The diamond tools to be chosen: The effect of grinding and polishing:... HWG 78 grinding and polishing machine for ...