1. Active carbon face mask got CE certificate 2. Ear loop/Tie ... -ply,3-ply, 2-ply, 1-ply Disposable Active carbon face mask have been gotten the TUV certification and BFE ... ) soft, comfortable, odorless, breathable4) no stimulus to human kin5) filter pollen, dust and bacteriaSpecification:1) Material: 3 ply 20/25g ... CE,ISO9001 standards, very low resistance to breathing Active carbon face mask