This article lists out the result from Shanghai Technical Inspection Bureau Mask Tests. It shows the efficiency test done on 30+ masks available in the China market. You may take this as an ultimate mask buying guide!
Click here to read details: https://smartairfilters.com/en/blog/shanghai-technical-inspection-bureau-mask-tests/
Free Guide to Breathing Safe
Want to learn more about protecting your health? Join thousands more and stay up to date on protecting your health.
Was this article useful?