Product Name: High Quality Outdoor Protective Disposable Non Woven 3ply Face Mask Model NO.: disposable mask Type: Mask Filter Rating: Normal Standard: GB19083-2010 Trademark: konvier Transport Package: 50PCS Per Box Specification: 17.5*9.5 Origin: China HS Code: 63079000 Product Description Non Woven Kn90 3 Ply Disposable MaskDescription: 1. BFE≥99% Bacterial filtration efficiency≥99%. 2. PFE≥99% Particular filtration efficiency≥99%. 3. Effectively isolating bacteria, pollen, dust and haze. 4. Differential pressure≤29.4pa/m3. 5. Made of high quality non-woven fabric and filter paper which brings soft and comfortable perfect fitting. 6. Applications: hospital, surgical, medical, dental, clinic, school, food industrial, clean room,laboraty, daily protection etc. 7. The production can be made per customers' specification and requirements.