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Pressure needle lead / product design

Pressure needle lead

you still sew clothes when "line" wear not into a needle and trouble? Now this design solve the problem well, let us havea look: only the line in central part of small needle groove gently one line pressing went in, no longer because "line" wear not needle into the holes and anxious fidgety.

University

Zhejiang Sci-Tech University

Zhejiang Sci-Tech University
Hangzhou, China

Design

Zhejiang Sci-Tech University

Zhejiang Sci-Tech University
Hangzhou, China

Lingling Xiao Mengjun li Qian Wang Yikang Sun