... development, production and service in ozone machine and air purifier products. We are the largest production base ... 20, 25, 30mins- Gas Resource: Ambient Air- Applicative Range: Water or Air Application (1) Air Purification Application Time Function and Effects Airtight ... room10minRemoves odor, tobacco smoke and particles in the air.Kitchen10minRemoves food preparation and cooking,(Onions,garlic,fish) ...