... gear polisher 4,for concrete,terrazzo,epoxy grinder and polisher is not only grinding and polishing concrete, marble,granite, terrazzo, but ... also for repairing, grinding, polishing, crystallizing millstones.grinder and polisher HWG 70 has the quickest motor speed, from 300 ... Noise 65DB Packing 1000*900*700mm The rotation way of grinder and polisher HWG 70: The diamond tools to be chosen ...