Suited place：

1.       Thick people place: Supermarket, Classroom, Internet Bar, Playroom

2.       Turbid-Air Public: Hospital, Underground Park, Station

3.       High-Temperature High-Pollute place: Kitchen of Hotel, Industrial workplace.

4.       Hothouse, Hoggery and so on

5.       Cooperate with Central Air Conditioner System: supply fresh air

6.       Place which need unvarying temperature and humidity, fresh air

7.       Outdoor place: outdoor dance, outdoor exhibit and so on