* Premium Quality
* Origin: China
* Certification: CE (NB 2834)
* Standard: EN149:2001+A1:2009
* Model: 8228-2
* Type: Cup style with head bands/straps
* Level: FFP2 NR
* Filtration Efficiency: BFE95
* Non-Sterile
* Packaging: 20pcs packed in a color box
* Structures:
1st layer: 45g non-woven fabrics;
2nd layer: 45g FFP2 filters;
3rd layer: 220g acpuncture cotton.