We from USB Company are committed to the current situation with the Coronavirus so we would like to contribute our end and be of help to our customers. As of today, we are ready to offer protective masks for your safety.
First layer: non-woven outer layer
Second layer: Electrostatic meltblown layer,
Third layer:KN95 level filtering
Fourth layer: Electrostatic meltblown layer
Fifth layer: Soft non-woven inner layer
Executive standard: GB2626-2006 KN95
Filtering Category: 0.3μm particle filtration ≥95%
Shelf life: 5 years
Quick delivery within 5 working days!