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syringe pin / pin

syringe pin

As we known,ordinary pins have a big drawback that people are easyly be stabbed.Syringe pin can deal with it simplely and quickly.It has a special appearance looked like a syringe .The structure of Syring pin is very simple,just two parts.One is needle, another is tumb.the needle was hidden in the tube before using,when used ,just gently push the top of part with the needle.


Nanchang University

Nanchang University
Nanchang, China