Platinum-iridium alloy is one of the most stable alloy materials in terms of chemical,mechanical,and electrical properties. It features strength, high elasticity, low contact resistance, and complies with human biocompatibility requirements. It is an ideal material for human implantation and interventional. Marker rings are currently mainly used in biomedicine.They are marker rings used as X-ray markers in the distal working area during interventional treatment. The is a platinum-iridium alloy,which does not introduce any additionaIl materials that may be harmful to the human body during use.This can significantly improve the efficiency of catheter manufacturing, enhance product reliability, and ensure safer use. We offer custom-made marker rings in various high-precision sizes