KF94 KN95 Mask 4 layers 10pcs/pack

▸ Model standard: KF94 & KN95 double certification
▸ Filtration efficiency: ≥94% particulate matter barrier rate
▸ Structural process: four-layer meltblown cloth three-dimensional molding
▸ Modeling design: fish mouth willow leaf type 3D lamination
▸ Packing specifications: black 10pcs/pack