1, soak the old brand in hot water, and then slowly tear it off. For signs that are not too sticky, this method works well, but for signs that are stuck for too long, the effect is not very good. First, tear off the paper part of the old logo, and then wipe the residual glue marks repeatedly with a hot towel to directly remove the offset printing. Although this can remove the old signs, it is time-consuming and laborious.

2. Pour the white vinegar on the towel, and then cover the glue mark to be removed with the towel. After a few minutes, scrape it clean with a plastic card and slowly clean the glue mark.

3. Pour the alcohol on the towel and wipe it repeatedly on the logo. At the same time, it can be scraped with a plastic card until the glue mark is removed.

4, gasoline can be poured on the towel, put on the logo to wipe, glue marks can be removed.

5, after a long time, you can use cleaning agents. Spray detergent on the towel and then gently wipe it at the sign. For the indelible glue mark, you can scratch it gently with a plastic card.