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lengthen / lengthen

lengthen

This is a pencil can be repeated use. Through structural transformation of the traditional pencil, short and difficult to use pencil can through the connection of a pencil, and can be extended use, avoiding the discarded by pencil short caused by the waste. The use of green environmental protection, it is very suitable for people.

University

Jiangxi University of Finance and Economics

Jiangxi University of Finance and Economics
Nanchang, China

shengjiang Li,
Jiangxi University of Finance and Economics

Yonhao Zheng,
Jiangxi University of Finance and Economics

Qizhen Huang,
Jiangxi University of Finance and Economics

Yonshi Liu,
Jiangxi University of Finance and Economics