Neró 2020-10-22T11:30:59+00:00 这种脏的,怎么能去掉?擦不掉,可能打磨么?多少的砂纸合适?不伤水性油漆的。[img]https://img.nga.178.com/attachments/mon_202010/29/-7Q5-cd3aK1hT1kShs-12i.jpg.medium.jpg[/img]