(incorporated in the Cayman Islands with limited liability) (Stock Code: 1938) NOTIFICATION LETTER 通知信函 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 Dear Non-registered Shareholder(1), 28 April 2025 Please note that by completing and returning the Request Form to request for the printed version of the Current Corporate Communications, you will expressly indicate that your instruction to receive printed version will apply to all future Corporate Communications( ...