CE Certification & FDA Certification China Certification. 3 Ply Face Mask, Disposable Non-Woven are intended to be worn to limit the transmission of the infective agents during surgical procedures and other medical settings. This medical face mask with microbial barrier is effective in reducing the emission of infective agents from the nose and mouth of an asymptomatic carrier or a patient with clinical symptoms. These are designed to protect against both solid and liquid aerosols. Fiber glass free and Latex free.