PPF mask features: 

• Efficient protective filter layer
• Exclusive patent dream fibre long-lasting water-repellent surface layer (Outer layer Waterproof)
• Nano silver ion layer: Antibacterial and Deodorizing
• The inner layer is skin-friendly, non-toxic, quick-drying and breathable
• Can be washed repeatedly 200 times without replacing consumables
• BFE, PFE, VFE are all> 99%

What is BFE? PFE? VFE?

• BFE is Bacterial Filtration Efficiency, which measures the efficiency of masks to filter bacteria.
• PFE is Particulate Filtration Efficiency, which measures the efficiency of mask filtering particles.
• VFE is Viral Filtration Efficiency, which measures the efficiency of mask filtering viruses.