Guo Xin Health Insurance Service Group Co., Ltd. (hereinafter referred to as "Guo Xin Health", stock code 000503) is a listed company of central enterprises controlled by China Guo Xin. The main business scope closely revolves around the reform of "three-medical linkage", specializing in "medical insurance fee control service, medical quality and safety service and medical device supervision service", helping management departments to standardize medical service behavior and improve the safety and effectiveness of medical insurance funds. China is a pioneer and leader in the field of health security services.