Guangzhou Huarun Thermal Power Co., Ltd. Guangzhou Company - Chemical and Environmental Safety Valve-2504 Change Announcement Number: DLBGGG202504150012 The Guangzhou Company - Chemical and Environmental Safety Valve-2504 Announcement (Project Number: 6GZNS020250400060) issued by our company on April 9, 2025 has been changed as follows: the deadline for quotation before and after the type change is 08:00:00 on April 15, 2025, and 08:00:00 on April 17, 2025. The deadline for clarification before the bid is 08:00:00 on April 13, 2025, and 08:00:00 on April 16, 2025. Except for the above changes, the rest of the original announcement is still valid. Guangzhou Huarun Thermal Power Co., Ltd. April 15, 2025