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拇指充电头 / Thumb Charging Head

拇指充电头

Everyday life to the phone, charging is always difficult to judge the positive and negative, to bring to life trouble.
The use of ergonomic charging plug, in case people do not look at the plug, the thumb alone tactile consciously distinguish positive and negative.

University

Zhengzhou University of Light Indus

Zhengzhou University of Light Indus
Zhengzhou city, China

栋 丁,
Zhengzhou University of Light Indus