Product Name: disposable non-woven activated carbon activated carbon masks masks masks thicker anti-formaldehyde four activated carbon respirator (four) Size: 17.5 * 9.5CM Material Structure: melt-blown non-woven cloth + + + activated carbon cloth without woven cloth. Color: Black. Packing: 50 / box, 40 boxes / carton, 2000 / box (or individually wrapped) activated carbon masks main features are: ⒈ antivirus, deodorant, filter bacteria, dust resistance and other effects. ⒉ especially for the occasion containing organic gases, acid volatile compounds, pesticides, SO2, Cl2 and other irritating gases, antivirus, deodorant effect is remarkable. Can effectively prevent ordinary masks can not play a role as well as a variety of airborne dust 5μm following the spread of bacteria from the respiratory tract, is a medical cause, chemical cause, spraying workshop, leather industry, and sanitation unit ideal protective equipment.