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It should be your cat's eye leaking, just re-tighten it.
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It's like the truth that the wooden flute has eyes and sounds when it is blown with its mouth.
The security door at home is very important, it is an important guarantee of our home security. When buying an security door, some people will have questions:What is the difference between an security door with a peephole and an anti-theft door without a peephole? >>>More
The installation method of the anti-theft door cat silver eye is as follows: >>>More
The limitations of the modification are the size of the cat's eye hole on the security door, and the thickness of the door leaf. If the size and length match, you can pretend to be whatever you like.
The steps to install the anti-theft door peephole are as follows: >>>More
There are cat's eyes everywhere the door is sold, and some property management also sells them, which is very cheap, dozens of yuan.