These N95 masks are FDA approved and can be found on the CDC website under the NPPTL's assessment results. According to the CDC website, "These assessments were developed as an assessment of the filter efficiency for those respirators represented as certified by an international certification authority, other than NIOSH, to support the availability of respiratory protection to US healthcare workers and other workers due to the respirator shortage associated with COVID-19." Per the NPPTL's most recent testing, these N95 masks manufactured by Liaoning Shengintang Biotechnology Co Ltd. show to have a 96.71% - 98.74% filtration efficiency.
5 N95 masks per package.
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