... terrazzo, but also for repairing, grinding, polishing, crystallizing millstones.grinder and polisher HWG 70 has the quickest motor speed, from 300 ... equipments. It is good for grinding and polishing in large area, and greatly consume time and labor.Performance:1,With 15 hp ... of Aluminum alloy,which is strong and durable;3,NSK bearing. It has automatically raising and lowering system;4,Special design of ...