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Anonymous users2024-01-24Spend money on the lock cylinder, using a high security level of the lock cylinder is the key, otherwise no matter how good the double-layered, three-layer door will be opened in seconds.
Because in reality, there is no thief who will break a hole in the door to steal something inside, even if it is a single door, the thief has much more difficulty to break than picking the lock, and the action is much larger.
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Anonymous users2024-01-23Depending on the specific environment, you can install it if you feel that you don't feel safe enough.
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Anonymous users2024-01-22If you have a lot of thieves in that place, I think it's necessary!
It is necessary, not because of the safety issue, but because the door is thick, there will be no resonance.
In this case, it may be that the bead you entered the door was not done well. Change this bead, you see if the effect can be improved, if it can be improved.
It doesn't matter what happens, an entrance door, an anti-theft door, it's normal.
The developer's "door-to-door dry balance" should be changed if it is correct or lost?
For the sake of solidity and security, it should be filled with cement, but the weakest point of the security door is the lock, even if the cement frame is not filled, the sturdiness is stronger than the lock. Since you have already installed it, you can leave it unfilled.