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Get a long plug table, connect it to a hair dryer, and bake it for a while The small advertisement of the sticker will soften, and it can be removed slowly.
If you stick it for a long time, the glue is dry, you can blow more, you will take a shovel against the edge of the advertisement, while blowing while pushing and dismantling, and holding the old man!
The small advertisement on the security door, if it is newly posted, you can use a heat gun (high-power hair dryer is also OK) to remove it and tear it while blowing. The pasting time is long, and the only way to soak it with a hand mill is to use it. To prevent repasting, you need to find the person who posted it and warn it multiple times. >>>More
Soak with water and brush down.
The new post can be removed slowly by blowing hot with a hair dryer, if it takes a long time, you will use a degumming agent, which is sold on the Internet, and you can also use wind oil essence and nail remover, and then buy a bottle of room door protector online and spray it on the door, and the small advertisement will not stick.
You can use hydrogen peroxide or sina water.