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Easy Key Ring / product

Easy Key Ring
Easy Key Ring

A traditional keychain ring is composed of metal coils tightly compelled together.much effort is needed to open it and it is possible to get hurt in the fingernails.
this new design of keychain ring avoids this problem with the metal tip at its opening warped outward,where keys can be slipped in slantly with little effort,saving a lot of trouble for the users.


Yanshan University

Yanshan University
Qin Huang Dao, China

Xin Wang,
Yanshan University

Jian Qiao,
Yanshan University

Minchao Cheng,
Yanshan University

Yibo Wang,
Yanshan University