If the vehicle shell is sunken and the paint does not fall off, it can be repaired with a seamless repair tool. This tool is a kind of tensile hammer with viscous suction, which pulls out the concave part by the ability of outward impact. The specific operation steps are as follows:

1. Apply hot melt adhesive to the slider.

2. Stick the hot melt adhesive on the concave part.

3. Put the tension hammer on the slider.

4. Pull the tension hammer outward.

5. It can be repaired by continuous pulling, and the hot melt adhesive can be removed with a plastic shovel.