Product Name : 3M 8511 N95 respirators ( with exhalation valves ) Item# : 9953-877 Model : 9953-877 Was Price: CNY0/A Now Price : CNY0/A Last update : 2011.10.29 Manufacturer : 3M China View Big Picture
American NIOSH standard.
* suitable for hot and humid loop or a long time wear protective; comfortable