... concrete floor, and stone renew and crystallization.marble floor polishing machine HWG 78 has planet disc plates, counter rotate, grind and ... backward;3,Motor can be separated from machine body, good for transportation;4,The control panel is easy to understand.Ideal for ... diamond metal, resin bond;2,Remove painting, coating, epoxy, urethane, glue, polyurethane,mastic with PCD tools.3,Pre-treat and level ...