Plateau Treasures Limited 高 原 之 寶 有 限 公 司 (Incorporated in the Cayman Islands with limited liability) （於開曼群島註冊成立之有限公司） (Stock Code 股份代號：8402) NOTIFICATION LETTER 通 知 信 函 Dear Non-registered Shareholder (Note 1) , 28 August 2025 The following document(s) of Plateau Treasures Limited (the "Company") has/have been prepared in English and Chinese and is/are available on the websites of the Company at www.8402.com.hk and The Stock Exchange of Hong Kong Limited at www.hkexnews.hk (collectively the "Websites"):- • ...