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Anonymous users2024-01-24Pro, if it is to change the lock cylinder, there is no need for any documents, only the regular brand of goods and regular companies can be, because there is no problem of unlocking here. If the lock is opened, not only formal industrial and commercial procedures are required, but also a locksmith qualification certificate filed by the Public Security Bureau. So the pro must be distinguished.
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Anonymous users2024-01-231.A company registered in the industrial and commercial register. 2. Public security filing certificate is sufficient.
The size of the lock cylinder of the anti-theft door, if you have a strong hands-on ability, you can remove it and measure it, based on the distance between the middle screw hole and the two keyholes, of course, if you are troublesome, you can simply measure it, as shown in the figure below, you only need to measure L1 + L2. >>>More
Please describe your problem specifically, and I will explain it to you.
It's easy. Sequence of disassembling the lock cylinder:
1.Remove the inner and outer handle panels: Screw on the handle panel in the house, one on the top and one on the bottom. >>>More
You can replace it yourself! It's very simple, remove the lock cylinder, buy a new one of the same model and install it.
Hello, I am Xiao Zhai of Juyou smart door lock, your problem is mainly to measure the position of the two screw holes at your 7 cm position, and whether it can be the same as the one bought online, because first of all, it is necessary to ensure that the lock cylinder is installed on the door and will not shake, and the black lock cylinder dial wheel is in the lock body to drive the lock body structure, and the difference of a few millimeters will not have much impact. But this depends on the lock body to know. Finally, when you buy a lock cylinder online, be sure to keep your eyes peeled. >>>More