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Elastic thumbtack is different from normal thumbtack.The translucent part around the pin can be unfolded to prevent the sharp pin from hurting people.While using,it can easily folded to let the pin out to set on the needed place.Not only it solves the problems of too sharp to store and use, but also the creative appearance is attracting people.
Lilong Zhou, Shuo Yang, Chiyu Zan, Danni Zhang