Dust filter element series ase used for special filter element of engineering driller dust box Materials recycle, air purification and dust removal of cigarette production line Materials recycle, air purification and dust removal of pharmacy production line Materials recycle, air purification and dust removal of production line for energy source,cement,chemistry,machinery and glass. Replacement of import typres,such as Taiwan Zhenghua,Taiwan Guoquan,USA Nuoxin,Jinmahaoshida,USANuoxin Type2000, West Germany WAGenaier and Vritain Yinluda.