Diversified Coatings - The Leader in Concrete Polishing with Bare Concrete, Acid Stain, Integral Color, Dry Shake Hardeners, Centitious Terrazzo The Industry Leading 10 Year Warranty Through the combination of diamond grinding polishing and the RetroPlate chemical, the RetroPlate System delivers a patented means to permanently strengthen floors, whether old or new, and to deliver a highly abrasion resistant, dust proof floor with increased impact resistance and reflectivity.