1.Catheter :Special PU material with excellent biocompatibility. Flexibility make catheter not easy adhere and block, less irritation, kinking resist and its self-soften in body make patient more comfortable 2.Catheter Tube :The catheter tube is radiopaque under X-ray and graduation marked, so it is easy to master the length of the catheter placement. 3.Catheter Placement :Seldinger technical makes placement safer, less trauma and less infection. J tip guidewire make organs less injury. 4.Catheter Front End :Straight or pigtail shape of the catheter tip are available to choose. Smooth multi side holes design enlarge and ensure the flow smoothly, anti-block and anti-wall stick.