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기계설비이야기
[생활 속 기계설비이야기] Safe vaccination depends on the cold chain
![[생활 속 기계설비이야기] Safe vaccination depends on the cold chain](http://www.kmecnews.co.kr/news/thumbnail/202102/9090_4845_553_v150.jpg "[생활 속 기계설비이야기] Safe vaccination depends on the cold chain")