Most industrial dust will blast when it meets the static discharge if the flammable and combustible materials' content to a certain extent, which will bring the explosion and fire, especial easily to happen when collect the dust in flour mills, chemical plants and coal industries, etc. So in the deducting application of this case, the dust should be collected with special dust bags which are anti-static.

Treatments and special fibers are added to the felt which can meet the special demands of the dust collection of blast furnace gas and coal gas in the cement industry etc.