Frequently Asked Questions & Answers
WHAT IS AN ASTM CERTIFIED MASK? ASTM is the American Society for Testing and Materials. They test the masks to determine the level of filtration effectiveness. After rigorous testing, masks are assigned one of the three ratings.
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WHERE ARE YOUR MASKS MADE? Our masks are manufactured in our facilities in Charlotte, NC, USA. |
CAN I BUY MASKS IN BULK? STRONG provides the option to purchase in bulk. Please visit our contact us page to submit a form and one of our dedicated customer service representatives will assist you. |