Product Description Product Name: Personal Protective Mask / KN95Product model: D13003Mask type: Folding MaskStandard: GB2626-2006, EN149:2001+A1:2009Certification: CE certification, FDA EUA listValidity : 3 yearsOur KN95 masks is composed of 4 layers:1. The outermost layer is a breathable PP non-woven fabric with waterproof treatment, which is mainly used to isolate the liquid sprayed by the patient and has the effect of preventing spray.2. The second layer mainly plays the role of moisture absorption and perspiration. Unlike the frequently used hot air cotton on the market, our second layer is a very thin non-woven fabric, which improves the comfort of the wearer.3. The third layer is a melt-blown fabric after electrets treatment. High-quality KN95 masks generally use a melt-blown cloth with a weight of more than 50 grams to ensure that bacterial suspension particles of <0.3 microns can be filtered. This layer is the most important core layer of a KN95 mask.4. The innermost layer is a soft skin-friendly non-woven fabric, which is non-allergenic and improves the comfort of the wearer.www.sinowayhealth.com