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Superposition pin / pushpin

Superposition pin

Due to gravity, pushpin is easy to tip upward. It easier to be damaged by the tip of the pushpin when people take it. In such situations, the pushpins can be stacked up. The shape of the pushpin is changed from the traditional straight line to a cone shape. A tapered hole in the middle of the pushpin penetrated, any pushpin can easily insert different one, so that pushpins can be in superposition. The pushpins can be easily penetrated with a foam in the bottom of the packing box.
The design is safe as well as space saving.

University

Xinhua University in Anhui Province

Xinhua University in Anhui Province
HeFei, China

MeiXian DU,
Xinhua University in Anhui Province

MingCong Chen,
Xinhua University in Anhui Province