... gear grinder 4,for concrete,terrazzo,epoxy marble floor polishing machine is a perfect choice for grinding concrete floor, and stone renew ... ,Remove painting, coating, epoxy, urethane, glue, polyurethane,mastic with PCD tools.3,Pre-treat and level the concrete surface before epoxy ... 1100*900*1300mmThe rotation way of HWG 78:The diamond tools to be chosen:The effect of grinding and polishing:.... HWG ...