Micro cooling fan manufacturers know that there are many brands of cooling fans on the market, and choosing a good DC cooling fan is also very important for their equipment. Micro cooling fan manufacturers believe that in the current cooling technology, the auxiliary cooling function of the fan is becoming more and more important with the improvement of the precision of the instrument. Therefore, choosing a good cooling fan is very important for the instrument. So how can you choose a good cooling fan in the vast market?

　　1. Choose from the brand. The micro cooling fan manufacturer tells you that choosing a fan with a good brand means choosing quality, which is an important guarantee for the quality of the DC fan .

　　2. Choose based on the appearance. From the outside, it should be relatively thick as a whole, with a purer color (especially black, which is not important for colored fans), with no burrs on the edges of the frame and blades. Check the thickness of the fan blades (very important because it is easy to break if it is too thin), and there should not be much deformation when you pinch the outer frame with your hands.

　　3. When it comes to bearing selection, the manufacturer of the micro cooling fan will tell you that there are two types of bearings: ball bearings and oil bearings. Ball bearings have a long service life and low noise, but they are very expensive. The service life of oil bearings is 1/3 shorter than that of ball bearings. Some noise may occur after a period of use (more than one year), but the price is cheap. After understanding the above, we can make a choice, but the manufacturer of the micro cooling fan will tell you that if the price of a ball fan is similar to that of an oil fan, it means that the ball bearing is old or obsolete, so don't buy it. The service life of the bearings in the new products promoted by various manufacturers (except for those clearly marked as oil bearings) will not exceed that of ball bearings, and there will be noise in the future use.

　　4. After the fan is running normally, select

　　a. Hold the fan with your hand and feel its vibration. If you change the angle and your hand feels the same, it means the fan vibrates very well. If there is vibration, it may cause resonance on the chassis. In the past, some people made loud noises when turning on the computer, which was mainly caused by the vibration generated when the fan started.

　　b. You should only hear the sound of wind (some high speed may have electromagnetic sound), if there are other sounds, it means that the quality is not very good. If the speed of the DC fan is not very high, such as the speed of a 7 cm fan does not exceed 3500RPM, but the wind sound is loud, it means that the quality of the fan is too poor.

　　c. Use your hand to stop the fan from rotating (do not break the blades) for about a minute. The micro cooling fan manufacturer tells you to touch the center of the fan blades to feel its temperature. If the temperature is high, it is unqualified. This can prevent the fan from being burned and causing a fire when it is stuck.

        Shenzhen Huaxinrong Plastic Electronics Co., Ltd. (a subsidiary of Dongweifeng) was established in 2008. It mainly produces and develops a series of products such as AC and DC cooling fans and DC motors. In today's rapidly changing modern technology, all colleagues of Dongweifeng will continue to dedicate high-quality products and services to our customers, and strive to become an indispensable partner for every customer to achieve success.

        Shenzhen Dongweifeng Electronic Technology Co., Ltd. was established in 1991. It is a national high-tech enterprise. It has now developed into a professional supplier of cooling solutions and products for computers, electronics, etc. The company has successfully passed ISO9001:2000 quality system certification, ISO14001:2004 environmental system certification and UL. TUV. CE product certification. As a national key high-tech enterprise focusing on R&D, manufacturing and sales, it has formed three pillar industries: computer electronic radiators, cooling fans; LED lighting, outdoor landscape lighting engineering lighting; and architectural decorative panels.