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Tenon pencil / Pencil

Tenon pencil
Tenon pencil

Although each pencil are about 17.5cm long, but after using the pen becomes shorter due, in part really being used is less than 13cm. This design uses a tenon joint and other structures on existing pencil to be improved, to effectively solve the pencil head brought wasted resources.


Hunan University of Science and Tec

Hunan University of Science and Tec
xiangtan, China

Iris Deng,