tem name:Disposable KN95 Masks Style:pp nonwoven, soft cotton, melt blown filter Material: 1st layer:pp 20g 2nd layer:20-25g 3rd layer:PP 20g/ES20g Color:white stand: BFE :99%,PFE :99%, Polypropylene inner and outer facing assures comfortable on the inside and protection on the outside Function:anti-coronavirus / prevent flu / anti smoke / dust Remark suitable for medical person or related personnel, protect against respiratory diseases transmitted in the air.The main functions are as follows: 1. The filtration level of the product for non oil particles is level 1, Greater than or equal to 95%; 2. Suction resistance shall not exceed 343.2pa; 3. The water level on the external surface shall not be lower than level 3; 4. According to the specified experimental method, meet the requirements of microbial indicators; 5. The materials used are not inflammable;