How to Repair Black Plastic Scratches Under Your Car Bumper

　　1. Clean the parts that need to be repaired at the black plastic part of the bumper with water;

　　2. After the sandpaper is soaked in water, the parts with burrs that have been scraped will be polished until smooth;

　　3. After grinding, wipe the repaired part with a dry cloth or paper towel;

　　4. Stick tape around the repaired place to avoid getting it to other places;

　　5. Use a sponge dipped in wax to wipe the scratches in circular motions until the scratches are removed.

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