N95 mask, 5 lawers of Non-woven, PP cotton, Electrostatic adsorption meltblown filter, Non-Woven, PP cotton. 25 gr spunbond non-woven fabric: Skin-friendly anti-allergy/ Filtering missing particles. Meltblown Cloth: Enhanced filtration =<0.3 micron particulate matter / 60 gr spunbond non-woven fabric: blocks large particles or microorganisms. TUV certificates, CE and ISO certificates are available.