1. Clean and sand: wash and dry the scratches, sandpaper gently grinds the surface and removes dust.

2. Repainting operation: shake the repainting pen well, and first try the colour in the hidden place; hold the pen vertically and apply it from the edge of the scratch to the middle. The deep marks need to be thinly coated many times, and each time it is dry.

3. Completion processing: After natural drying, sandpaper is sanded and levelled, and wax is polished.