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the pin is composed of two parts, silica shell and internal needle. it can be fixed to the wall after pressed, and when you pull it out, the silicone shell will automatically return to its original shape, to ensure the safety of users. customers can also insert a pin into another one, so it is easily collected.
Zhejiang Sci-tech University
Hangzhou,China
Hangzhou, China
Fu, Sizhe
Ningbo, China