... for grinding concrete floor, and stone renew and crystallization.marble floor polishing machine HWG 78 has planet disc plates, ... Grind and polish concrete, marble, granite, terrazzo with various grit of diamond metal, resin bond;2,Remove painting, coating, epoxy, urethane, ... .3,Pre-treat and level the concrete surface before epoxy coating;Parameter: Weight 240KG Extra (Iron) Weight 45KG Current 16A ...