Cooling Fan is mainly used in electronic equipment, mechanical equipment, for the product cooling, cooling for some of its own not poor cooling capacity equipment is very important, many customers in the market do not know when to buy whether the cooling fan has been refurbished, so let's find out how to distinguish whether the cooling fan is a refurbished product. 

1. There is an installation hole behind the cooling fan, the renovation is used, so there will be traces on the installation hole, if it is used on the tapping screw will leave threads in the hole. 

2, look at the trademark, the original cooling fan trademarks are very beautiful, uniform color, printing of the handwriting is Shiny, refurbished trademarks are informal, printing quality is poor, with a fingernail gently scrape off the color. 

3. Look at the fan blades of the cooling fan. The original fan blades generally have a matte finish, fine and uniform particles can be seen against the light, while the refurbished fan has been exposed to air for a long time, there are no particles on the surface of the blades. You can see the marks from the rubbing. 

The above is a brief introduction on how to distinguish whether the cooling fan is a refurbished product. I hope it is helpful for you to choose a good cooling fan. It is very important not only to make the equipment run normally, if you want to know more about the cooling fan, you can pay attention to ushttp://www.dxymotors.com.