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It may be that you didn't do it exactly according to the instructions, but you check it carefully, including the angle of each detail, the number of rotations, and so on.
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What brand is the anti-theft door, tell me.
There are three types of locks in the security door market: Class A anti-theft lock (abbreviation: Class A lock) and Class B anti-theft lock (abbreviation: Class B lock). >>>More
The anti-theft door has ABC3 kinds of keys, and the A key is used when decorating the decoration is completed and the C key is used to screw 360 degrees in the opposite direction The A key can not be used, and only the B key can open the door to the door key Divine Thought. (There is a description of the difficulty of the manuscript behind the key when handing over the room). >>>More
One is for decoration!
The second is mainly to make the decoration unopenable! >>>More
At present, according to the "Mechanical Anti-theft Lock" standard issued by the public security department in 2015, the anti-theft door is divided into three levels, A-level lock, B-level lock, and C-level lock, and the anti-theft performance from A-level to C-level is getting higher and higher. The differences between Class A, B, and C keys are as follows: >>>More
Nothing has an impact. My family has been using A and B keys for many years. It's normal that you haven't upgraded all the time.