Product Description: disposable face mask is made of soft PVC plastic, which is composed of oxygen delivery conduit and cover body, air bag, fixed bayonet, conduit, oxygen delivery joint, threaded pipe, elbow, etc. According to the use, it can be divided into six types: general type, adjustable type, atomization type, with capsule type, cut type and bite type atomization type. Each type can be divided into three specifications: large size, medium size and small size. Packing: 100 PCs.