8912 masks, products comply with GB2626-2006 KN95 standard, 5 layer filter, inner and outer layer of fabric: gauze laminated fabric: KN95 meltblown filter, electrostatic filter cotton, cotton spunlace. Product features 1 by leading international electrostatic adsorption principle of non-woven fabric, the diameter of more than 5 micron fine granule filtration rate greater than 95% 2 built-in plastic shaped nose, and face tight fit, after the start of the formation of three-dimensional space to breathe, breathe not oppressed. 3 high-tech ultrasonic point belt, strong, beautiful, wear a long time no ear pain.4. can fully replace the traditional gauze mask