Core Viewpoint - Gansu Electric Power Investment Energy Development Co., Ltd. has decided to terminate its credit rating cooperation with China Chengxin International Credit Rating Co., Ltd., leading to the invalidation of its credit ratings for both the company and its related debt instruments [3]. Group 1 - Gansu Energy's credit rating was maintained at AA with a stable outlook as of June 20, 2024, while its debt instruments "22 Gansu Electric Power GN001" and "23 Gansu Electric Power GN001" were rated AAA [2]. - The credit ratings for "24 Gansu Electric Power MTN001" and "25 Gansu Electric Power MTN001" were also rated AAA, reflecting the unconditional and irrevocable joint liability guarantees provided by Gansu Electric Power Investment Group [2]. - The termination of the credit rating was communicated to China Chengxin International on June 18, 2025, with the company ceasing to provide necessary materials for the rating process [3].