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Glazed doors are popularly used nowdays. People tend to pierce through the long locks to lock the door,which is inconvenient.How to place the Long lock is also a big problem.This design combines coded lock with door knob by turning the mix,which is convenient and safe.You do not to need to
Zhejiang Sci-Tech University
Hangzhou, China
Weijie Kong
Zhejiang, China
Changsheng Zhao
hangzhou, China
