CHU KONG PETROLEUM AND NATURAL GAS STEEL PIPE HOLDINGS LIMITED 珠 江 石 油 天 然 氣 鋼 管 控 股 有 限 公 司 (incorporated in the Cayman Islands with limited liability) (Stock Code: 1938) NOTIFICATION LETTER 通知信函 Dear Non-registered Holder (1) , 12 September 2025 Chu Kong Petroleum and Natural Gas Steel Pipe Holdings Limited (the "Company") — Notification of publication of 2025 Interim Report ("Current Corporate Communications") The Current Corporate Communications in both English and Chinese versions, are available on the ...