【 Auto cooling fan 】 Need to know the choose and buy

【 Auto cooling fan 】 Choosing the brand from the brand good fan means choose quality, so it is important to ensure the quality of the fan. Choose from the appearance from the outer surface should be overall thick, color is more pure ( Especially black, with the color of the fan is not important) , at the edge of the box leaves no burrs, see the thickness of the blades ( Thin is very important because it's too easy to break) , with the hand knead frame without too much deformation. Bearing up choice because of the bearing is divided into two kinds of ball bearings and oil bearing. Ball bearing service life is long, the noise is small, but the price is very expensive. The service life of oil bearing a third shorter than ball bearings, in use after a period of time may be some noise ( More than one year) , but the price is cheap. Know more than we can choose after, but if some ball fan is the price of oil price is the same as the fan, explain the ball bearing for old or out products don't buy. With each manufacturer of pushing the new bearing ( In addition to the clear oil bearing) Life won't have more than ball bearings and will in the later use have noise.

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auto cooling fan 细节。 asp吗? Cpid = 121
supply auto cooling fan at http:///products- 细节。 asp吗? cpid = 122