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Did some research and found this, Chengde Technology Co., Ltd. is misusing NIOSH test information regarding WWDOLL model CD9501B KN95 Foldable Protective Masks. The product package indicates it meets Chinese standard GB 2626-2019 and was submitted to NIOSH under an International Respirator Assessment request. It is being marketed using results from the assessment. As stated on the NIOSH website, these results are not to be used by manufacturers, distributors, suppliers, and importers to make claims about their products and/or to influence purchasers and cannot be used to make claims that the product meets NIOSH approval requirements. Chengde Technology Co., Ltd. is not a NIOSH approval holder or a private label holder. (2/18/2021)