Sheet metal painting is a kind of automobile repair technology, which is to repair the deformed part of automobile metal shell. For example, if the car body shell is knocked out of a pit, it can be restored to its original state by sheet metal, and then the deformed car metal surface can be restored to the same brightness as other intact places by spraying special paint.

It only takes 3 hours to repair and paint a scratch on the Shinkansen. I've experienced it and it feels good.

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