... 20 2.The main features 1. Multiple Function:Air cooler,Fan,Purifier and Humidifier.2. Honeycomb wed pad ... protection. 3.The principal of Xiboli Air Cooler SystemThe air cooler is taking the fresh air as an input ... and using cooling pad as an air cooler and filtering, therefore the dust and hot air ... and health ect. 4.Where to use Xiboli Air Cooler System1 For indoor using: home ,office,restaurant , ...