The product can be used to filter out solid impurities in oil or water and collect dust and aerosol particles in atmosphere.

The composite fiberglass filter paper is made of superfine glassfiber as filtration layer which is covered with synthetic or natural fibers as protection layers on both sides so that the mechanical strength of the product is improved and the problem of "secondary pollution due to the fall-off of superfine fibers is solved.As a novel filtration material,this product has characteristics of high filtration efficiency,high dirt holding capacity,low resistance,high mechanical strength and stable biochemical property.