... Item No.: MSF-NWDM A dust mask is a flexible pad held over the nose and ... ceramic or glass production), or sweeping. More-Safe's Disposable Dust Mask: * earloop,easy to wear * nonwoven material * economical * high filtrability ... , grinding medicine, disintegration projects, cement, agriculture and animal husbandry, cutting dust, pollutes from heavy metal. More Details: * Packing: 50PCS/box, 20boxes ...