(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: 660) NOTIFICATION LETTER 通知信函 Dear Non-registered Shareholder(s)(Note 1) , 25 August 2025 The following document(s) of Wai Chun Bio-Technology Limited (the "Company") has/have been prepared in English and Chinese and is/are available on the websites of the Company at www.0660.hk and The Stock Exchange of Hong Kong Limited at www.hkexnews.hk (collectively "Websites"):- • Circular dated 25 August 2025 in relation to ...