International Assessment Results NPPTL NIOSH CDCFeb 10, 2021NPPTL makes no representation as to the authenticity of the samples received and assessed. As part of its standard respirator approval process for NIOSH-approved respirators, NPPTL conducts a comprehensive quality assurance review of the quality process and manufacturing site.Smog has air purifiers flying off the shelves Industries Liaoning Dongke Pharmaceutical e Mask Dust MaskChang Zhonghua, a lab examiner at a pharmaceutical factory in Shenyang, capital of Liaoning province, said she had to wear a mask every day because of the poor air quality.Authorized medical devices for uses related to COVID-19 Liaoning Dongke Pharmaceutical e Mask Dust MaskFor example surgical face masks of different sizes are listed separately. Report a problem or mistake on this page. Please select all that apply A link, button or video is not working. It has a spelling mistake. Information is missing. Information is outdated or wrong.
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Apr 08, This mask is mainly used as a dust mask (home renovations and various types of work). N95 masks, also known as FFP2 masks in the European standard, have a minimum of 95% filtration percentage and maximum 8% leakage to the inside. They are mainly used in construction, agriculture, and by healthcare professionals against influenza viruses.