Dust mask 1.made by non woven polypropylene spunbond 2.convient to use and bring 4. keep out from the dust 160GSM FFP2 DISPOSABLE DUST MASK 1.. this disposable dust mask we usually produce 12 kinds: 100gsm,120gsm,140gsm,160gsm,180gsm,200gsm,220gsm,240gsm,260gsm, 280gsm, 300gsm,320gsm,you can choose as you like, Also we do do as your requirement2. material: it is 100% non-woven ,it is soft for ...