Nasogastric Catheter Specification: 1. New international standard interface can be provided to prevent misconnection and make the connection safer and more reliable. 2. Polyurethane material: 2.1 The tube wall is thin, the tube body is soft, the patient feels less foreign body during the intubation process, the comfort is high, the compliance is good, and the success rate of one-time intubation is high. 2.2 Good biocompatibility, resistance to gastric acid corrosion, long retention time. 2.3 Indwelling in the body can be softened and protect the nasal mucosa. 2.4 Small tube diameter reduces the risk of aspiration and lung infection. 2.5 Does not contain PVC and DEHP. 2.6 Guide wire: Good toughness, which not only guarantees the push performance, but also is not easy to discount.