●Advanced liquid Silicone :soft,comfortable,fit,long service time,high temperature resistance,anti-aging;

●Thread interface structure is easy to replace the filter;

●Four exhale valves design on nose and mouth, to reduce hot air circulation. Top valve is hided,the bottom valve is protected by cover,hard to broke,easy to disassemble and clean;

●Ring head belt design is more suitable for wearing helmet on operating environment. Keep more durable of polyester spandex elastic belt ;

●With two filters P-A-1(3#), to prevent organic gas or steam,for example,benzene and it’s homologous ,aniline, gasoline, acetone, carbon disulfide, alcohols, ether, aldehyde, carbon tetrachloride, three potassium chloride, celfume, methyl chloride, nitrobenzene,  nitroalkane, chloropicrin;

●Another, with anti dust filter cotton and filter cotton cover;

●In line with GB 2890-2009 standard,have China LA & QS certification;

●Package:3set/box,18set/carton.