The key to the special Changheng security door is used by the decoration workers

It's the difference between a decoration key and a formal key.

Let the worker use the A key, after the decoration is completed, use the B key "waste A key", after the B key is lost or broken, use the C key to open the door "waste B key", and then change the lock core.

During the renovation period, the decoration key has been used, and the door key is not used first, and it is locked with tongue reeds. Once the decoration is completed and there is no need to be in the acceptance, you can discard the decoration key, use a new unopened key, and the decoration key will not open the door.

The key is divided into two kinds: A and B, one is used when decorating, and can be left to the workers, and when the decoration is over, the other is used, and that one is invalid and can not be used.

I bought more than you, it's useless, people are in the rivers and lakes, life can't help themselves, Song Jiang is a Ming kill in the Water Margin, and now this society is popular assassination, Hubei Province, Laohekou City, no one closes, use poison, crematorium business is too good, in 2016, you can hear the sound of firecrackers every 3 days, that is, there are too many red envelopes ...... the locksmith