... 4.excellent service 5.high quality Any of the following types of masks is available:disposable carbon face mask, non woven ... mask, active carbon face mask, nonwoven active carbon face mask, non woven active carbon face mask, disposable carbon face mask, active carbon ... nose piece, high filtration.Packaging: dispenser box of 50 masks, 40 boxes per master carton Face Mask with high quality for cleanroom