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It is called anti-grain screen, and after you buy it back, you can buy it again, and then buy the aluminum alloy strip lock screw to press the screen.
If the small anti-lock knob inside the anti-theft door is broken, it can be repaired by itself, and only ordinary pliers are needed. >>>More
Find out what you want right away, and then change the locks.
This is a problem inside the lock body, you can find a professional locksmith to replace it with a new one.
Summary. If the outside of the anti-theft factory is locked and the inside cannot be opened, first of all, stay calm and do not panic. Here are a few things you can try to solve the problem: >>>More
It's just that the inside is not good, and the circlip inside is usually broken. Disassemble and repair.