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1. Mask, filter implementation standards:National standard GB2890-2009 "Respiratory protective self-priming filter gas mask"Specifications for Inspection and Inspection of Safety Mark Products for Special Labor Protection Articles2. Industry applications:Petroleum production, chemical production, mining, fire rescue, epidemic prevention process, metallurgical production, pesticide spraying, spray paint decoration, medical experiments will produce a lot of toxic gases, steam, etc. Long-term exposure will cause respiratory tract, lungs, heart, blood And many other diseases, and may even induce cancer.3.Technical specifications1. The protection time is the same as the performance of the selected source (level 2, level 3, level 4), see the list of filter element performance and use;2. Expiratory resistance: <40Pa (30L / min; Inspiratory resistance <293.Field of view: total field of view:> 73%; binocular field:> 72%; field of view below:> 40 degrees;4.Mask leakage rate; ≤0.01%;5. Storage period: 5 years.
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