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can possibly be introduced into the lock itself, which eliminates the threat of gunpowder explosions.
# Permutation lock has the ability to rearrange new key combinations.
# In the event of a lost key, a duplicate key can be set up to unlock the lock, and upon changing the arrangement of the lock, the lost key will be powerless to open the lock.
# The portability of the key conveys a vast advantage over traditional bank locks.
# Every motion of the lock is derived from movement of the hands rather than elements beyond the

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