... -woven and Active Carbon highly efficient low resistance 4 Ply Welding Mask-Soft, lightweight-Hygienic, Non-irritating to skin, Odorless, ... /FFP2/FFP3/N95-High filtration efficiency and low resistance, Comfortable and reliable protection, effectively resist normal toxic and tiny micron ... , food industry, manufacturing, processing, environmental sterilizing, and so on. Comfortable Welding Mask