BeiJingNMD

The mask consists of a surface, middle layer, inner layer, mask earband and mask nose clip. The filtration efficiency of the fused cloth is greater than or equal to 99%. The main functions are as follows: 1. The filtration level of the product for non-oily particulate matter is 1 level, greater than or equal to 95%; 2. The suction force does not exceed 343.2pa; 3. The water level of the outer surface shall not be lower than 3 levels; 4. The standard experimental method sits in accordance with the requirements of microbial indicators; 5. the material used is not flammable; Mask design has excellent sealing, the total application factor of the mask is not less than 100. There are 50 masks in each box. We have enough stock to deliver the goods within 48 hours!