... cost high quality 3,large gear polisher 4,for concrete,terrazzo,epoxy grinder and polisher is not only grinding and polishing concrete, marble ... equipments. It is good for grinding and polishing in large area, and greatly consume time and labor.Performance:1,With 15 hp motor, it ... is good for grinding the large area;2,All gear box and motor is made of Aluminum alloy,which is ...