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Product Name:5-ply KN95 Respirator Disposable Face Mask Same Level with N95. Standard: GB2626-2006 Filtration Efficiency: 1. Non-oil Particles Filtration Efficiency (PFE): >= 95% 2. Bacterial Filtration Efficiency (BFE): >= 95% 3. Inspiratory resistance: < 350 4. Expiratory resistance: < 250 Layers and Materials: 1. First Layer (Outer Layer): Non-woven fabric 2. Second Layer: Melt blown cloth 3. Third Layer: Melt blown cloth 4. Fourth Layer: Filter sponge 5. Fifth Layer: Ultra-soft non-woven fabric Function: Anti-bacteria, anti-smog, anti-pm2.5, anti-particles, anti-spray.
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