01
Worsening fine dust issues and year-round severe air pollution People today spend more time outside than indoor. The atmosphere at multi-use facilities is getting worse.
02
Environment measures of the central and local governments which lack effectiveness The government policies to combat environmental problems such as advising people to stay indoors, wear masks, and operating an "Alternate-Day-No-Driving System" are somehow not effective enough to block fine dust.
03
The limits of small-sized air purifiers for family use Because more fine dust is generated in multi-use facilities such as subway stations, underground shopping areas, airport lounges, libraries, day-care centers, senior-care centers, etc., it is cleat that small-sized home air purifiers are not sufficient.
04
The increasing importance of air purifiers specially designed for extensive multi-use facilities Large-capacity air purifiers are needed more than ever to reduce fine dust in larger areas.