Theairmultipliersilentlydrawsinairbehinditthenamplifiesitthroughtheringby15xtoproduceacoolandcontinuousflowof405litresofaireverysecond.Thisisallpoweredbyabrushlessmotorandtheairspeedcanbepreciselyadjustedwithdimmer-switchcontrolsratherthantheusualtwoorthreesettingsonregularfans. 无叶风扇直流无刷电机专业生产深圳市三亩田电机有限公司www.sangmutan.com sales@sangmutan.com info@sangmutan.com