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The manufacturer will make it, and the configuration is no problem.
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You can call a contact number and ask the other party to send the key over, or you can pick it up, just say it in advance, otherwise you have to wait.
Spray the keyhole with rust remover! Hardware stores sell a bottle for ten yuan and can be used for a long time.
The lock cylinder is broken! It is recommended to take a few more keys and try to add some vegetable oil to the lock cylinder, but only to change the lock cylinder.
The general security door can be opened by someone on the 800 only pick the lock and then change the lock cylinder for you.
It's not that the serpentine groove is good, the lock cylinder level is divided according to the grade, mainly the A B super B lock cylinder, the super B lock cylinder is currently the highest level of the lock cylinder, that is, the so-called C-level snake lock cylinder on the market, in addition to password locks and fingerprint locks.
Is it a quick lock? If it is a quick lock, it may be that you do not lock the door on the outside, but you can still open the door by pressing the handle on the inside.