Page from a well-known site electricity supplier point of view, "Cooling Fan" in the price range of 200 to 500 yuan, the price at around 300 cooling type fan comparison by consumers, it seems that most consumers have to pay more if you feel 100 yuan can buy a really cool to enjoy the cooling type fan is acceptable, the cooling type fan 500 yuan, relatively few people buy, after all, a thousand dollars to succeed, you can consider a small one a single cold air conditioning. Let's look at the sales floor fan of reference, there is a product that many years ago, has long been popular, stand fan entity malls and major electricity supplier sites have considerable sales, sales, or about 200 yuan best the non-inverter stand fan.