... . Remove formaldehyde, benzene, ammonia, TVOC, odor,bacteria, smoke; Sterilization rate of 99.99%; 4. Release aroma and negative ion5. Three class ... of wind speed, to meet the different needs Note:1. Magnetic ... functions, sterilization rate as high as 99.99%; 5. 3 classes of wind speed to meet different needs 6. Healthy anions, fresh ...