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Retractable / Flashlight

Retractable
Retractable

This is a new type of flashlight whose batteries number and lightness can be determined according to the user’s requirement. Even with just one battery, it still could work well. The retractable structure brings it several advantages, for example, the flexible size, portability, consideration for special situation with only one battery, changeable number according to the requirement.

University

Dalian Nationalities University

Dalian Minzu University
Dalian, China

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Design

Dalian Nationalities University

Dalian Minzu University
Dalian, China

Cong Tian,Delin Hou,Na Jin,Rui Zhang

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