Non Woven n95 mask: 1) Material: nonwoven+filter+neele punched; 2) Layer: 3ply; 3) ... N95 Mask / Silicone Respirator / Reusable / DisposableSuited to mining ,buildings,casting,grinding drugs,agriculture,gardening,forestry,livestock husbandry,subway engineering,aluminum working,electronic ... cutting,disintegration engineering,smashing,etc. disposable non woven cloth dust mask n95 standard