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2005

2022-03-02

According to the passive lock cylinder developed in the early stage, the passive small padlock and the passive cabinet lock are designed synchronously. These two products are small in size, and can quickly replace traditional products and upgrade the lock cylinder. In the same year, a passive lock key management box was designed based on the lock cylinder and used in some institutions.

According to the passive lock cylinder developed in the early stage, the passive small padlock and the passive cabinet lock are designed synchronously. These two products are small in size, and can quickly replace traditional products and upgrade the lock cylinder. In the same year, a passive lock key management box was designed based on the lock cylinder and used in some institutions.

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2004

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