nonwoven face mask, medical face mask, disposable mask, 3 ply, with ear loop nonwoven face mask, medical face mask, disposable mask.3 ply, with ear loop50pcs/box40boxes/cartoncarton dimension:52cmx38cmx44cmapplication:disposable cleanroom face maskFeature:it has 90% of filtering efficiency to 0.1 *10-6-m particle. ultrasonic withour particle seals edge.update date:20120810,16:43 3ply face mask