... a perfect choice for grinding concrete floor, stone renew and crystallization.concrete floor surface grinder HWG 60 is popular because ... ;4,The control panel is easy to understand.Ideal for1, Grind and polish concrete, marble, granite, terrazzo with various grit of ... , glue, polyurethane, mastic with PCD tools;3, Pre-treat and level concrete surface before epoxy coating.Parameter: Weight 190KG Extra ...