| The type has four main parts: half-face mask body, filter, exhalation and inhalationvalve and straps. It can only protect from dust be equipping qith filter cotton like NDSR3001.Features:1. Efficient Adsorption and Filtration: The canister is filled with activated carbon of high quality that can filter efficiently different gas2. Comfortable Wear Silicon rubber is adopted to our respirator, which makes the wearer comfortable. 3. Long time of toxic gas resistance 4. Perfect air permeability5. Low breathing resistance | 
