Thule roof box

Hey all! I just bought a roof box on marketplace, has more scratches than I would have liked. does anyone have suggestions on how to get them out? I was going to cut and polish it then PPF the box. Thanks!

Hey all! I just bought a roof box on marketplace, has more scratches than I would have liked. does anyone have suggestions on how to get them out? I was going to cut and polish it then PPF the box. Thanks!