... produced are 175*95mm, with 2 or 3 or 4 layers as well as many three ... dimensional face masks and BFE degree are 99% and 95 ... MaterialNon-woven, Meltblown fabric, Customized Stylewith ear loop or tie onApplicationfor medical, surgical, pharmaceutical, laboratorial, industrial ... :2 years 3.DisposableBFE: 90%,95%,99%OEM1.Material or other specifications can be according to ...