Non Woven n95 mask: 1) Material: nonwoven+filter+neele punched; 2) Layer: 3ply; 3) Free of maintenance; 4) Dust mast. We are factory,produce all ... manufacturing industry,food processing,cement works,textile mill,hardware factory ,metal burnishing,polishing and cutting,disintegration engineering,smashing,etc. disposable non woven cloth dust mask ...