in 24hdisposable face mask 3 ship layers anti-dust pm2.5 masks ear loop mouth mask1

100%brand new and the respirator use: permeability is good don't boring can achieve the effect of dust the bridge of the nose with aluminum strip can be fixed role. non-woven masks for one-time items, easy to use, and make relevant purification treatment, can be used for food., electronics,textiles. clean room operators, also can be used to do everyday products. many industries advantages: ventilation,anti dust material:non-woven fabric masks specification: 17.5x 9.4cm three layers