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Security pushpins / Security pushpins

Security pushpins

n daily lives, people are easy to
be stabbed and wounded by a
thumbtack since the pin of it is
very sharp. In order to avoid this
situation and to make it more safe
to use a thumbtack, a telescopic
protection structure can be added
to the periphery of the thumbtack;
No matter one wants to store or
use thumbtacks, one's fingers
won't touch the pin of them thus
avoid being stabbed and wounded.
When using a thumbnail, one only
need to press the cap of it to nail


Hua zhong University of Science and

Hua zhong University of Science and
Wuhan, China


zhenqi, Han

zhenqi, Han
Wuhan, China