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You go to the property company in charge of this community. Because if your community has not set up an owners' committee and has not hired a property management company, the initial property management company is generally hired by real estate developers, and some are set up by real estate developers themselves, so they will take care of maintenance.
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
You can't add engine oil, you can add two substances:
Grated pencil shavings. >>>More
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.
Dotting the oil in the place of the deadbolt and the key, cooking oil will also work.