One in three face masks purchased in China for healthcare personnel do not meet the requirements
2020-05-23T01:08:13.362Z
32% of the 173 analyzed by the Institute for Work Safety show a filtration efficiency of less than 80%...
Now you can see non-English news...
2020-05-23T01:08:13.362Z
32% of the 173 analyzed by the Institute for Work Safety show a filtration efficiency of less than 80%...
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