3 Layers Design:
The outer layer: in a typical blue color, is a soft
non-woven fabric that has good water repellency?
The second, the MOST important level of protection, is a
high-quality melt blown layer with 95% bacterial filtration efficient (BFE),
same as US medical mask ASTM standard Level 1 BFE requirement.
The third is a skin-friendly and hypoallergenic non-woven
fabric with a good water absorption layer.
Quality Standard: China YY/T 0969-2013 or GB/T 32610 2016 +
Bacterial Filtration Efficiency (BFE) ≥95%, same BFE requirement as ASTM 2100
Level 1