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For those who work outside or travel with a luggage,it is oftenseen that they are worried about the insecurity
of their luggages when certain emergency draws their attentions.While the rotarysafety luggage, added a coded
lock ingeniously by changing its trolley ,can solve this problem.It functions as a common luggage under normal
circumstances. When one has to leave for a momentbecause of the urgency,the only thing he needs to do is
rotate the handle, lock it to a pillar or a chair, and set the password. Then he can leave relievedly.
Zhejiang University of Technology
He Jingjie Ding Huanjun Chenchen