Active Carbon Face Mask Active carbon face mask is a special 4-ply design plated face mask loaded with active carbon pre-filter. It can be used for the removal of a wide variety of contaminants, bad odor and organic vapours. Made by ultrasonic machine. Unique surface water resistant and soft lining, non-irritating and fiberglass free. Special 4-ply pleated design / activated carbon flat. Used for the removal of bad odor and organic vapours (1) MATERIALSOuter Coverstock Inner Coverstock Middle Filter Medium Active Carbon Filter White --25g/35g/40g Polypropylene Spunbonded Light Green/Pink/Blue --16g Polypropylene Spunbonded White --20g/25g Meltblown Filter Dark -- 50g (2) DIMENSIONWidth across face Depth pleated Metal strip, inside stitch 4xTie length 2xloop size exposed 175mm+/-5mm 90mm+/-5mm total width(c.a.100mm) 380mm+/-5mm 185mm+/-5mm (3) PACKINGa. 1pc/polybag,50pcs/inner box, 1,000pcs/ctn b. 50pcs/inner box, 1 , 000pcs/ctn