Among the many "AC Fan" type, we can not ignore the explosion of knowledge and understanding of the fan, explosion-proof fans and other types of fans also require the user to choose to use it to understand the basic principle, but also to have some resolve fan methods and techniques of failure, especially in the more important aspects of maintenance but also to very seriously. Let's look at several explosion-proof fans more important part of our blades is often said blade, blade allows better play the role of explosion-proof fans, ventilation fans make more significant effect, so as to ensure workplace within the property have a better storage environment.