1,humidify,2, purify the air,3,provides additional comfort to dry ... 4, Ultrasonic,5, cool moisture Ultrasonic Humidifier has the blow feature: 1,it can be used in house ... material. 3,Put in aromatherapy essential oil, creat the fragrance and comfort environment, 4,Put in repellent liquid to ... prevent the bite from mosquito, put int the vinegar to kill the fungus 5,provides additional ...