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Safe comdom / Condoms

Safe comdom
Safe comdom

This is a kind of condom which can change the color,it is more safe than common.
The difference is when you contact the harmful virus,it will become red, and remind you are in danger,it also can help you to avoid the transmission of sexually transmitted disease.
Their smile are from…

University

Dalian Nationalities University

Dalian Nationalities University
Dalian, China

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University

Dalian Nationalities University

Dalian Nationalities University
Dalian, China

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Design

Dalian Nationalities University

Dalian Nationalities University
Dalian, China

Zihan Yuan; Yong Jiang; Xuefei Liu; Di Fang

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