... with reasonable prices. Our machines are widely used on floor surface, for renovation,grinding and polishing. We occupied the ... . For grinding, polishing, renovation, restore, repair, and new floor applying, etc.2. On floor surfaces covering concrete, epoxy, stone, marble, granite, terrazzo, ... (); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); JS-550 dual-head concrete floor polishing machine