3 Layers Professional Protection, Filtration rate ≥95%
1. 1 ply SPP nonwoven - Antibacterial, filtration of particles less than 1mm.
2. 1 ply meltblown nonwoven - NM grade material, mechanically block dust particles, high-efficiency electrostatic adsorption filtering bacteria.
3. 1ply SPP nonwoven - Antibacterial,Hygroscopic & Breathable, Reduce bacterial infiltration.