1. Soap with a little mixture of ammonia and turpentine can remove a lot of dirt and make the glass surface more shiny (this article applies to ceramic tiles, ceramics, glass, etc.). 2. The optical shop found out how the clerk handled the trademark on the lens: stick it on with wide transparent tape, and then tear off the tape to take away the trademark. No trace is left. 3. Wipe it off with a little sodium chloride solution, or use paint thinner. 4. Blow it dry with a hair dryer, and then scrape it gently. 5. Wipe it with a cotton swab dipped in nail polish remover. 6, wind oil essence wipe. 7. Wipe with special cleaner or sports shoes decontamination cream. 8. You can erase it with the 4b eraser for drawing, which is a very soft Korean eraser. 9. If the trace left for a long time has hardened, you can soften it with a hot towel before wiping it.