N95 disposable mask     Specifications   n95 dustmask FFP1 FFP2 N95 valved face mask NELSON NOISH Certification N95 valved face mask;N95 Mask disposable mask 1.low breathing resistancewith high filtration efficiency 2.polylenematerial without any toxic, irritating, stimulant, poison 3.Adjustable nosepiece and inner foam provide a custom seal for different facial 4.Elastic headbands ensure snug fit and minimize coverage slippage 5. Easy-breathing exhalation valve with silicon piece inside designed to facilitate air exchange, increase worker comfort. 6.It is widely used in medical-health departments, food industry and personal health, particularly for cement factories, food powder factories and textile factories for personal protection against air pollution   Specification: Material: PP Meltblown Packing: 50pcs/inner box, 1,000pcs/ctn