As of August 13 , 2021, NIOSH has revoked ALL approvals issued to Shanghai Dasheng Health Products Manufacture Co., Ltd.

Dasheng is a great brand of N95 masks, but unfortunately it was cancelled. Their company cannot effectively prevent fakes from appearing on the market. Instocking LLC insists on direct purchase by the manufacturer to guarantee the authenticity, but we still obey the decision of the CDC to withdraw the product. Customers of Instocking LLC do not have to worry about quality issues, please go to NIOSH N95 Mask List find alternatives.

https://www.cdc.gov/niosh/npptl/resources/pressrel/letters/respprotect/CA-2021-1038.html