... -woven Certificate: CE highly efficient low resistance 4 Ply Nonwoven Mask-Soft, lightweight-Hygienic, Non-irritating to skin, Odorless, and ... toxic and tiny micron particles against nuisance organic acid vapors-Factory price, superior quality-OEM production acceptable -Applications: Applied to ... , food industry, manufacturing, processing, environmental sterilizing, and so on. Nonwoven Safety Mask