Should the old paint be removed before repainting?

[MacHarmony]

Repainting requires the removal of the old paint because if the existing paint is not treated, the new paint and old paint will blend and then separate and peel off. Even if the new paint looks perfect right after application, it can easily come off when washed with a high-pressure water jet. Additionally, repainting increases the thickness of the paint film. If the original paint is not removed, the repainted area will be higher than the original paint surface, making it look unattractive. Generally, the entire clear coat is sanded off, followed by the application of the base coat and then the clear coat. The electrophoretic coating is the main anti-corrosion layer of the car. If it is damaged, the steel plate will gradually corrode. When repainting, protective measures must be taken, and any areas not to be painted should be covered with newspaper or other masking tools.