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If there’s a fire in the building, you will likely have to go out of the building through a passageway full of toxic gases. The available gas masks are already insufficient, and they take up much space. Also, it takes a long time to put one on. If you have a Mask Book, you will be able to escape the building safely and quickly.
Catholic university of Daegu
Daegu, South Korea
Changwon National University
Daegu, South Korea
Daegu University
Daegu, South Korea
Keimyung University
Daegu, South Korea
Catholic university of Daegu
Daegu, South Korea
Wanik Jo
Changwon National University
Daegu, South Korea
Jinhyuck Yoon
Daegu University
Daegu, South Korea
Inkyu Hwang
Keimyung University
Daegu, South Korea
Shinhye Park