1CE,ISO13485. 2.Made of PVC 3.Infant, Children and Adult size (XS-XL). 4.Sterilized by ISO. Nasal oxygen tube 1.Made ... PVC,be consisted of nasal tube,catheter and joint.2.Only for one time use,convenient.3.Suitable for adult,child,infant ... .4.Twin Nasal Tips provide maximum freedom to the patient and ...