Madical tubing with Smooth surface, non-toxic, odorless, and resistant to disinfection. Especially the budy use tube must be free of harmful soluble substances (such as lead, cadmium, arsenic, etc.). Medical materials will be contacting with body tissues, blood and body fluids, Some are even permanently implanted in the body. Therefore, the materials must be have excellent biological fungibility (mechanical properties, functionality), Biocompatibility and blood compatibility.