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The security door downstairs is not easy to use, if the security door fails, you should contact the property personnel in time, the property personnel will sometimes repair, unless the security door can not be used at all, it will be replaced with a new security door.
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The security door downstairs is not good, you can go to the property. If it can be repaired, the property will find someone to repair it, and if it can't be repaired, the property should be replaced with a new one.
You can't add engine oil, you can add two substances:
Grated pencil shavings. >>>More
Dotting the oil in the place of the deadbolt and the key, cooking oil will also work.
1.Step 1: Distinguish between real and fake security doors. >>>More
Don't get oil! This is important. Scrape the powder of the pencil lead to the key, put it in the lock cylinder and repeat it several times, so that it can generally be solved. >>>More
If the new one is not enough, it can be processed separately, and there are those who repair locks on the street for others, and there are all kinds of key embryos.