Floor Grinding Machine, Concrete Laser Screed Machine, Floor Hardener manufacturer / supplier in China, offering 4 Inch Diamond Flexible Grinding Disc 5 Step Polishing Pads for Granite Marble Stone Ceramic Tile Concrete, Diamond Segments for Floor Grinding with Rectangle, Round, Oval, Arrow, Hexagon, Rhombus Grinding Disc Polishing Pads, All Hot Perfect 3 4 7 10 Inch Universal Polishing Pads Diamond Abrasive Disc Grinding Disc for Concrete and Terrazzo Stone Floor and so on.