How to choose a good fan of it?

　　There are many brands on the market cooling fan, choosing a DC cooling fans for their equipment is quite important. In the current cooling technology, the fan assisted cooling function with improved precision instrument becomes more and more important. So choose a good instrument for the cooling fan is very important in terms. How to choose a good cooling fan in the vast market it?

　　1. Choose Select brand means choosing a good quality fan from the brand, so that the DC fan is an important quality assurance.

　　2. Select from the appearance from the outside surface should be relatively thick overall, relatively pure colors (especially black, the color of the fan is not important), at the edge of the box leaves no burr, see the thickness of the blades (very important because thin easy to break), there is not much time Yong Shounie frame deformation. Fan

　　3. Select bearing up because the two ball bearings and bearing into the bearing oil. Ball bearing long life, low noise, but the price is very expensive requirements. Oil-bearing ball bearing service life is shorter than 1/3, may be some noise (over one year) in use for some time, but the price is cheap. After more understanding since we can choose, but if any ball fan fan oil prices and the price is almost the case, indicating that the ball bearings or the elimination of the old product, do not buy. And push for new manufacturers of bearings (except clear that the oil-bearing outer) will not exceed the life of the ball bearing, and there will be noise in the future use.