model:ST-LDY1release time:2017-07-24 01:30:50popularity:1246 times to focusproduct feature: Protection against inorganic gases or vapors, such as hydrogen cyanide, hydrogen chloride, hydrogen arsenide, etc Equipped with st-agxd anti-fog drip filter element and filter element cover, it can be used for dust and vapor protection GB2890-2009 standard Packing: 135 PCS/carton