Stone grinding machine can renew,polish,grind the floor,marble,granite etc. Stone grinding machineSeriseStone renewal machineDescriptionStone renewal machineTypeMRK-220BPower5hpVoltage220VSpeed0-1500Work Area310×550Grinding ... best efficiency for 6pcs grinding unit stone grinding merchine in domestic at present.Heavier than GS serise,improve more powerfully in grinding..... Stone grinding machine