... 1500w,but our fan is 750w.so,if you take use of it,you just need pay half of the cost. ... volume output.If we regard our fanner as a worker: he eat half of “meal”,does one and a half ... worker’s “work”,and he has good temperament,what is important is that he is strong,you don't need pay too ... much medical expenses,he can work for you for very long ...