How To Determine If The Cooling Fan Has Been Refurbished

The cooling fan has the characteristics of fast speed and large air volume, which can be applied to different industries. However, how do we determine whether it is refurbished when purchasing it? Let's follow the editor to learn more!
Firstly, it can be judged from the trademark. The original trademark printing is very exquisite and even. Moreover, the printed handwriting is relatively clear and glossy, but the refurbished ones are all informal and have poor printing quality. You can easily scrape the color off with just one touch,.
Then it can also be judged from the surface of the fan blades that the original surface has a graininess. If touched by hand, it will have a rough feeling. If it is refurbished, the surface of the fan blades will have no graininess and will be relatively smooth, and the marks of friction can be seen.
From the installation holes, it can also be seen that generally refurbished ones are those that have been used before, so there will be marks on the screws. If installed by oneself, there will be marks on the holes of the screws and marks on the nuts around the holes.