floor grinder Grinding and polishing ISO9001 certificate and ... smoothing concrete surfaces, leveling out high spots and curled joints, removing coating, mastics, epoxies, urethane, adhesive residues, or paint, ... sheet especially suitable for grinding lower strength surface and epoxy mortar, putty layer.6 Resin sheet is used ... -80S 100”/40”/60”/80”(Optional) multifunctional floor grinder for polishing