Even before long, we have not so concerned about global warming, urban heat island effect, whenever the arrival of summer, the weather in some areas people feel very hot, because the only place to live bedrooms are air-conditioned hall is no air conditioning , there is a saying a calm heart keeps you cool, not to mention the small series in the hall is placed a floor fan, but one day a friend said he bought a "Cooling Fan", feel the wind and cold effect can still hear friends introduction, heart naturally cold fan long grass. As a brand control, small appliances buy must properly choose what brand, nothing more than choose to buy big brands, so it would be more tricky, after all, as an ordinary office workers, not willful buy buy buy, buy anything to rationally more prudent.