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Half-lead pencil / pencil

Half-lead pencil
Half-lead pencil

It is a environment-friendly pencil, There are following improvements compared with normal one: The material around pencil lead is made of recycled paper, and there is no lead on one end of pencil, which voids the waster of lead in normal pencil

University

Zhejiang University of Technology

Zhejiang University of Technology
Hangzhou, China

Shangshang Zhu;Xin Lv

Design

Zhejiang University of Technology

Zhejiang University of Technology
Hangzhou, China

Yang Wang;Weiwei Luo;Jia Jiang;Kun Zhang;Liguang Zhang