filter is usually used for ventilative system,belongs to midum effciency filteration,it can eliminate dust,pollen,fog..

filter,air filter,ventilative filter

filter is usually used for all kinds of ventilative system,and belongs to midum effciency filteration,it can eliminate dust,pollen,fog

and so on. Features:innocuity,no smell,small resistence.                                                                                                                                     

filter,air filter,ventilative filter(FV-003)