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Retractable belt / Retractable belt

Retractable belt
Retractable belt

During the outbreak of COVID-19, it is found many cases that the mask isn’t fit for someone in our daily usage. This new product, which is designed to be able to adjust strap of the mask is intended to solve the problem of size mismatch, that would make it easier for the usage of the mask for us.

University

Zhejiang university of finance

Zhejiang university of finance
& economics dongfang college
Zhejiang , China

PingYi Yang,
Zhejiang University of Finance & Economics Dongfang College