Product Name: Medical Apparatus Nasal Oxygen Cannula Model NO.: MC115-A, B, C, D Material: Medical PVC Type: Respiratory Product Description Production License Number: SFDA (M) 2001-0746Product Registration Number: SFDA (Z) 2013-2561347Executive Standard Number: YZB/Su 1404-2014ProductDescriptionMaterial: Non-toxic,Medical-grade PVCApplication: For clinical oxygen absorbing.Specification& Size:A: Double-set single-nose;B: Double-set double-nose;C: Single-set single nose;D: Single-set hangerPackaging: 500pcs/CartonAdvantages1. The product is composed of the nasal part, the connecting pipe and the connector.2. Has traditional shape, a variety of configurations, to satisfy different oxygen demands.3. The tube has internal thread to ensure oxygen flows freely and will not bend.4. Nasal part is fine, soft and without burr. It is comfort to wear.