1. Blow the plastic enclosure with a hair dryer, and heat the glue to get it off.
2. You can try the eraser. But at the beginning, you will feel that the more you wipe it, the more dirty it gets, but you will see the effect if you wipe it longer.
3. Soak it in water, put a little detergent, and brush with an old toothbrush.
4. Dip a cloth with alcohol or Erguotou to wipe the plastic enclosure.
5. Wipe it off with a little sodium water, or use paint thinner.
6. Wipe with a cotton swab dipped in nail polish remover.