... whereas ACs circulate stale air inside a sealed room.Applications:1). Manufacturing:Textile, Machinery, Ceramic, ... Bakery, Playground, Hospital, School, Passenger Waiting Room, Supermarket, Restaurants, Washing Room, Kitchen, Vegetable Market, Entertainment Center, Gym, ... Underground Parking Lot, Park, Warm Room, Stock Farm, Garden, Factories, etc.PRODUCT VIEW: PRINCIPLE ...