Sichuan Energy Investment Development Co., Ltd.HKEX: 1713

Supplemental announcement connected transaction supplemental contract to the EPC contract

· Issued by Sichuan Energy Investment Development Co., Ltd. via HKEXnews

Filed with HKEX · Stock code 1713 · · 4 pages · English

(a joint stock company incorporated in the People’s Republic of China with limited liability) (Stock Code: 01713) SUPPLEMENTAL ANNOUNCEMENT ## CONNECTED TRANSACTION ## SUPPLEMENTAL CONTRACT TO THE EPC CONTRACT Reference is made to the announcement of the Company dated 4 December 2025 (the “Announcement”), in relation to, among other things, the EPC Contract entered into between (i) Yiliangruiyuan

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