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Vova Men Fashion Black Mask Solid Color PM2.5 Gauze. The dustproof mask can be used for anti dust, anti vehicle exhaust, anti pollen allergy, anti PM2.5 and haze day protection. Easy to wear and they provide a superior level of protection over the paper masks, and Very comfortable for long periods of time. Washable, can be repeatedly used.

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Design of Polymeric Nanofiber Gauze Mask to Prevent Recently, PM2.5 (particulate matter with diameter of 2.5 micron or less) has become a major health hazard from the polluted air in many cities in China. The regular gauze masks are used to prevent inhaling the PM2.5 fine particles; however, those masks are not able to filter out the PM2.5 because of the large porosity of the mask materials.

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Design of Polymeric Nanofiber Gauze Mask to Prevent Recently, PM2.5 (particulate matter with diameter of 2.5 micron or less) has become a major health hazard from the polluted air in many cities in China. The regular gauze masks are used to prevent inhaling the PM2.5 fine particles; however, those masks are not able to filter out the PM2.5 because of the large porosity of the mask materials.

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2020 China Fashion Construction Working Half Folded PM2.5 KN95 Dust Respirator Mask. Get Price; China N95 Filter Dust Mask, N95 Filter Dust Mask China N95 Filter Dust Mask manufacturers Select 2020 high quality N95 Filter Dust Mask products in best price from certified Chinese Face Protection manufacturers, Dust Mask suppliers, wholesalers and factory on Made in China

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New Reusable Face Mouth Mask PM2.5 Anti Dust Pollution . The dustproof mask can be used for anti dust, anti vehicle exhaust, anti pollen allergy, anti PM2.5 and haze day protection. Easy to wear and they provide a superior level of protection over the paper masks, and Very comfortable for long periods of time. Washable, can be repeatedly used.

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Pack of 3 Adult Face Mouth PM 2.5 Protection Gauze Mask Activated Carbon Breathable Cotton Reusable Respirator Anti Dust Fog Haze Plain Color 3D Shape with Earloops, Black x 3. 4.0 out of 5 stars 14. £7.79 £ 7. 79. £2.99 delivery. 3 pieces N95 Medical Face Masks, FFP2 Multifunctional Protective Mask with Nose Clip, Antiviral Bacteria Proof

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pm 2.5 mask 1 Star & Up pm 2.5 mask 1 Star & Up Zhehao 60 Pieces Anti PM2.5 N95 Activated Carbon Mask Filter Face Masks Insert 5 Layers Protective Filter Breathing Mouth Mask Filter for Outdoor Activities (10.5 x 7 cm/ 4.1 x 2.7 Inches) Holulo Paint Spray Respirator Half Face Respirator Anti Dust Reusable Mask,Organic Vapor Respiratory Protection.

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Pack of 3 Adult Face Mouth PM 2.5 Protection Gauze Mask Activated Carbon Breathable Cotton Reusable Respirator Anti Dust Fog Haze Plain Color 3D Shape with Earloops, Black x 3. 4.0 out of 5 stars 14. £7.79 £ 7. 79. £2.99 delivery. 3 pieces N95 Medical Face Masks, FFP2 Multifunctional Protective Mask with Nose Clip, Antiviral Bacteria Proof

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The N95 mask filters out 95% of dust and particulates. The N99 masks will filter out slightly more at 4% more polluted particles but the N95 mask offers 50% lesser breathing resistance than N99. What is PM 2.5 made of? PM 2.5 pertains to dust, spores, and pollen in the air. 100 Pieces Anti PM2.5 N95 Activated Carbon Mask Filter