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See clean / Air cleaner

See clean

We doubt whether the air cleaner is working. It is a filter that eliminates the doubt.
We will confirm the contamination. We will check the operation of the air purifier. through the small sticker.

University

Chung-Ang University

Chung - Ang Unigersity
Seoul, South Korea

So Yeon Kim,
Chung - Ang Unigersity

So Yeun kim,
Chung - Ang Unigersity

Min Ji Kin,
Chung - Ang Unigersity

Ju Hee Lee,
Chung - Ang Unigersity

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