Usually when the industrial dust concentration reaches a certain level (i.e. the explosion limit), it is very easy to cause explosion and fire if it encounters factors such as static discharge sparks or boundary ignition. At the same time, the air dust in the dust collector contains more water and oil, hygroscopic and soluble dust, which makes it difficult to clean the dust surface. Compared with ordinary filter materials, this needle felt combines the advantages of waterproof and antistatic needle felt. It not only has oil and moisture resistance, but also has antistatic effect.