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Traditional keychain comparison difficult,and easy to hurt your nails.
This new design only make a boot change in a outlet department ,
Making the detaining easy and convenient.
NanChang University
NanChang,JiangXi,China, China
NanChang University
NanChang,JiangXi,China, China
ShuGuang Li,WenFeng Luo,ChangHai Zhou,XiaoPing Chen
