Industrial motherboard cooling fans are mainly of bracket type, without outer frame protection, the fan blades are designed to rotate counterclockwise, and are upright. The wind blows around and blows down at the same time. An important issue to pay attention to is that the single fan cannot be dropped from the ground. As can be seen from the above picture, the leaves are thin and long, and the contact area between the leaves and the drum is very small. The entire cooling fan will lose balance and cause damage
Therefore, the cooling fan manufacturer focuses on the sample, because the sample does not have a standard outer box, and is usually wrapped in a bubble bag. It is recommended to take the sample out on the table, so that the chance of falling is much less.