the membrane resists water or saliva,but it is ventilated.so the mouth mask can be used on emergency artificial respiration, and prevent disease like AIDS.It is packed in paper peel bag.
Tel: +86 20 3902 6210
(Ms. Million Chen)
Tel: +86 20 39026286 ext 6011
(Mr. Eddie Lui)
Rm 901 Building No.2,Headquarters Center, Tian'an High-Tech Ecological Park,No.555 North Panyu Avenue,Panyu,Guangzhou,China