Advantages B.Features and benefit: 1.Wide scope of preventing poison: The masks adopts multiple kinds of superior toxin filtration agents and has excellent wide spectrum of comprehensive poison preventive peformance. It can effectively prevent the substances produced in fire accident ,such as CO,HCN, heavy smoke, poisonous mist, powder dust, poisonous stream ans gasous toxin and etc. 2.Small dimension: The mask is uniquely featured internal-shrunk toxin filtration tank and folding package,design,which makes its package dimension smallest masks reduced by one quarter comparing with other same products in our country. 3.Dedicated materials and powerful recognition:the shell of toxin tank adopts stainless steel material and treated by polishing .comparing with toxin filtration tank manufactured by plastics or aluminum,it is stronger no matter in resisting mechanic collision or in the performance of resisting environmental variation. The head masks is produced with flammable-resisting almunum foil cloth,which can stand high temperature up to 800*C in heat resistant test and protests the head free from being hurt by flame, thermal radiation and dropping dust of flame. Reflecting performance of stainless steel, combining with silver mask, red head belt and neck cover ,greatly improves the chances of being found by fire fighters. 4.Easy to use: 3 four steps to finish wearing ,helpful for people escape quickly