Ffp1 Active Carbon Respirator 1) CE,FDA,ISO,TUV,NELSON 2) Faster delivery,chaper price,good quality 3)OEM ... require7. BFE: Bacterial filtration efficiency:99%8. Certificate: CE, FDA, TUV, NELSON9. Mini quantity: 10000pcs10. Place of origin: Shenzhen, China11. Features ...