... ,180gsm,200gsm,220gsm,240gsm,260gsm, 280gsm, 300gsm,320gsm,you can choose as you like, Also we do do as your requirement2. material: it ... to make the elastic to contect the mask strong,so you will find very durable.7. it is like a bowl ... logo on the mask as you require.9. packing: 10pcs/polybag with a card, 1000pcs/ctn The cheapest dust mask (180gsm non ...