Ply: 4 High quality non-woven materials Specifically designed the inner of the facemask for maximum comfort Activated carbon, produced from coconut shell Benzen Filtration: > 6min Amoniac Filtration: >11min Bacterial Filtration Efficiency (BFE) : 99% Particle Filtration Efficiency (PFE): 99% Viral Filtration Efficiency (VFE): 99% High protection Odors and chemicals elimination Mask Dimension: H95 x W175mm Packaging: -Bag (Material: OPP ; Dimension (LxWxH)mm: 290 x 185 ; Shape/color: Design; Quality packing: 1pcs/ OPP; Paste tape) -Box (Material: Page Duplex ; Dimension (LxWxH): 185 x 105 x 110mm; Shape/color: Design; Quality packing: 40 pcs/box) -Carton box (Material: 3 layers; Dimension (LxWxH): 545 x 390 x 460mm ; Shape/color: Design; Quality packing: 40 boxes/carton; Paste tape letter )