... , polishing, renovation, restore, repair, and new floor applying, etc.2. On floor surfaces covering concrete, epoxy, stone, marble, granite, terrazzo, etc ... Fiber Reinforced Plastics) 7. Driven by both gear and belt 8. Wheel ajustment for different floor surface. 9. Alloy water switch ... (); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); JS-550 dual-head concrete floor polishing machine