at first i was very skeptical i must admit i mean i didnt even know it was possible to remove scratches from glass and my window supplier said that there would be a "distortion" in the glass if i tried to repair it but i called these guys in hopes that he was wrong, the glass repair guy said he could do it and provided me with a free demo at no cost so i gave it a shot. These guys are very clean organized and proffessional they came in and did what i thought was impossible....they removed several very deep and minor scratches from the windows in our office that was left behind from a window washing company that used razors to scrape dirt off our windows the cost of replacement on all windows would have cost me thousands more than it was to repair it and you cant even tell that the glass was damaged at one point the proccess was cool to watch and i couldnt say enough about the results hopefully i wont need it done ever again but if i do i know who to call,thank you guys so very much and i hope this review helps with your business.....very satisfied customer here!!!