the medical 3m n95 mask for medical,which is able to protect people  in case occur the virus,the standar is for hospital,such as the n95,3m n95,3 layers and so on types,we can supply  the different model mask for people  with larger quantity,the  shipping can be EMS,UPS,FEDEX,TNT and so on,the 3m is the first choice to protect  peoples  health, particulate respirator n95 mask of 9211  model