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Sounds like a doorstopper, better send a picture. If the door is broken, go to the building materials hardware store or building materials supermarket, market or something to buy a new one, and install it yourself.
Hardware store bar.
Generally, hardware stores will have these accessories. >>>More
There are student residences.
High fees. >>>More
There are on Taobao, I bought it last time, about 13 yuan more than 1, I can adjust the range and time, it is very sensitive, and I installed the bathroom very well.
This should be easier to buy, you can buy it when you go to the place where the aluminum alloy window is processed.
It's nothing, it's normal, you haven't done anything. And everyone understands that you are short-sighted and can't see clearly.