：70以下。 English: Catalog number: 67823 Features: ● Comes with a silicone adjuster to adjust the length of the strings. ● Highly cushioned nose foam (nose pad) reduces leakage and provides comfort. ● Aluminum nose clip can be adjusted to fit the shape of your face. ● The strings are ultrasonically bonded and the joints are staple-free, providing high durability and safety without the worry of metal allergies. ● Comes with a valve to expel moist air to the outside, providing safety and comfort when worn for long periods of time. Applications: ● Dusty work ● Welding work Specifications: ● Particle collection efficiency (%): 95 ● Limit of use: 17 ● Intake resistance (Pa): 70 or less ● Exhaust resistance (Pa): 70 or less ● National certification number: No. TM815 ● Disposable dust-proof DS2 mask with valve ● National certification DS2 standard: No. TM815 9600-DS2V ● 4-layer structure ● Head-mounted type ● Comes with an adjuster ● Limit of use: 17 hours ● Designated protection factor: 10 Caution: ● Cannot be used repeatedly. ●This product cannot be used in places where toxic gases, steam, or liquid particles are generated, or where the oxygen concentration is less than 18%.
