Features
=== Usage===
It is mainly used to clear the dust of 5μm above.

===Makeable Filter===
It can be made into gathers style and bag filter. The leeward is smooth and never occurs fiber velvets’ dropping. 

===Advantage===
As the filter area increasing, it can advance the dealing of wind quantity, lower the resistance and extend the lifetime.
 
===Application===
It is widely used in the dust primary filter of blast-furnace air, large oxygenerator, pharmaceutical, automobiles, nuclear power as well as chemical industry.