If the bumper can be partially painted, the bumper painting process is as follows:

Step 1: Cover the adjacent parts and clean the parts to be repaired with silicon solvent.

Step 2: Apply a layer of putty on the whole surface to repair all scratches.

Step 3: Wet grind the whole surface with 600# sandpaper and repaint the whole surface.

Step 4: re-spray top coat with two-component mixed polyurethane acrylate coating and add softener. If metallic paint is sprayed, it should be quickly dried for 5 minutes after spraying, and then the bright layer should be sprayed.