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By pumping the tray at the bottom of the ordinary way to do an opening, you can achieve one hand tear off. so we can liberate the other hand.
Its idea is to use one hand to complete the tear-off action, the use of the product material is metal. Metal is very hard, and thinner than other parts of the opening, so the paper can easily be torn.
Beijing Institute of Technology
beijing, China
Beijing Institute of Technology
beijing, China
Chengcheng Sun
Beijing Technology and Business
University
Beijing, China
Qidong Yang
Beijing Technology and Business
University
Beijing, China
Han Hao
