... velocity 3.filtration Benzene and TVOC Activated carbon fiber felt (air purification) is made from viscose fiber by carbonization and activation with ... is widely used in solvent recovery, air purification, water treatment, gas mask, cigarette filtration material, nuclear air cleaning system, ozone elimination filter, gasoline ... .5/4/5mmWidth(max): 1.4m Activated Carbon Fiber Felt-air purification