One-time non-woven mask specification: 17.5 cm * 9.5 cm applicable scope: factory supermarket and hospital SMS dust mask technies nonwovensupply type Make-to-OrderColor Blue green white pinkType: Hang ear type place of origin RiZhao ChinaFunction: It is made of white nonwoven cloth. In order to keep it clean,both edges are sewed up by the advanced hot rolling technology. Active mask can filter ...