N O T I F I C AT I O N L E T T E R 通 知 信 函 17 April 2026 Dear Shareholder, Shengli Oil & Gas Pipe Holdings Limited (the "Company") – Notice of Publication of 2025 Annual Report ("Current Corporate Communication") and Arrangement of Electronic Dissemination of Corpo rate Communications The Current Corporate Communication of the Company has been published in English and Chinese languages and is available on the website of The Stock Exchange of Hong Kong Limited ("HKEX") at www.hkexnews.hk and the Company's we ...