▶Outer layer material: PP nonwoven fabric
▶Middle layer material: Meltblown PP nonwoven fabric
▶Inner layer material: PP nonwoven fabric
▶Length: 175mm+/-5mm
▶Width: 95mm+/-5mm
▶Ear loop: Polyurethane and nylon
▶Length: 160mm+/-5mm
▶Nose clip: PVC with built-in steel wire.
Fixed in the middle of the upper edge of the mask.
▶Ventilation resistance: <43.0Pa/cm2
▶Particle filtration efficiency: >95%
▶Formaldehyde content （mg/kg): Not detected
▶pH value: 6.8 no irritation to skin
▶All the masks are packed ISO Class 4 clean room.
▶Standard Practice: EN14683:2019+AC:2019
