... -ply, 3-ply, 4-ply 4.excellent service 5.high quality Any of the following types of masks is available:disposable ... face mask, Composition: 100% polypropylene non-woven and melt-blown fabric, hypoallergenic, fiberglass free, latex free, fluid resistant with enclosed ... nose piece, high filtration.Packaging: dispenser box of 50 masks, 40 boxes per master carton Face Mask with high quality for cleanroom