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【Cultural and Creative Product】 All Five Sons Succeed in the Government – Fix-orientation Lock

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Cultural and Creative Product All Five Sons Succeed in the Government – Fix-orientation Lock 

 

NSTM collects over six hundreds of ancient Chinese locks. There are some locks with special designs that the right portion of the key-head must contact the keyhole in the right position and in the right orientation in order to enter the keyhole, and such locks are named "labyrinth locks" or "fix-orientation locks". In such a design, even if a stranger has the right key, it is difficult for him to insert the key into the keyhole for opening the lock.

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