non-woven face mask, various type 2-ply, 3-ply, 4- ... , 15x9cm, 16x9cm, 17.5x9.5cm non-woven face mask, 2-ply, 3-ply, 4-ply Sanitation and quality ... Comfortable, Odorless, Breathable4) No stimulus to human skin5) Filter bacteria and dust6) Used for clinical and workshopSpecification:1) Material ... 9cm4) Packing: 50pcs/box, 40boxes/ctn5) Color: White, Blue, Green, Pink, Yellow etc.6) Customer's logos can ...