Product Name: Mask Good Quality Medical Mask Logo Printing: Without Logo Printing Group: Adult Quality Guarantee Period: Two Years Ethylene Oxide Sterilization: Without Ethylene Oxide Sterilization Material: Non-woven Fabric Type: Face Mask/Apron/Gloves Filter Rating: N95/KN95/FFP2 Standard: GB19083-2010 Specification: 20 Origin: China Product Description 2020 top quality KN95 MASK1, Details:Five layers: two layers non-woven fabric+two Medical grade melt blown cloth(filtration efficiency >95%)+air filter cottonThis product can effectively resist bacterial and viral transmission carriers such as droplets, dust and particles.Store in awell-ventilated and dry environment away from light and fire and pollution.Storage temperature: -20-38ºC, relative humidity <80%GB2626-2006 KN95validity period: 2years2, Medcial registration certificate:3, Our factoryContact us :Shenzhen Calux Purification Technology Co., LtdWeb: www.hzf888.cnAdd:No. 7-3, Fudigang Second Industry Area, Pingdong Community, Pingdi Subdistrict, Longgang District, Shenzhen, Guangdong, China