1. The material is imported polyurethane, which has strong aging resistance,
                                    good compatibility, non-toxicity, extremely smooth surface, and small crusting tendency.

                                    2. Good bendability, elasticity, large inner diameter, large tube diameter,
                                    thick tube wall, large drainage capacity, suitable tube diameter, no up and
                                    down movement, and can be radiopaque.

                                    3. Tiemann tip for easy access to ureter. The material is polyurethane material,
                                    soft, highly elastic, with many side holes, good flow rate, not easy to deform,
                                    smooth stent, easy to pass through the ureter, good biocompatibility,
                                    no damage to the tissue, no stimulation, no blockage, fully radiopaque and easy to check. 

                                    4.Catheter OD：3F.4F.5F(4.8F).6F.7F.8F 

                                    5. Composition: catheter stent, booster, guide wire (optional), catheter clip (optional, etc.). 

                                    6. Length：15.22.24.26.28.30CM. Scope of application: suitable for upper urinary tract
                                    surgery such as kidney stones, ureteral stones, hydronephrosis, kidney transplantation,
                                    benign tumors of the kidney and ureter, as well as lithotripsy and machine lithotripsy.
                                    During the treatment of dilation of ureteral stenosis, it can play an important role
                                    in drainage of urine after implantation in the ureter and prevent ureteral stenosis
                                    and adhesion blockage.