ISDN HOLDINGS LIMITED 億仕登控股有限公司 (Incorporated in the Republic of Singapore with limited liability) ( 於新加坡註冊成立的有限公司 ) (Hong Kong stock code 香港股份代號: 1656) (Singapore stock code 新加坡股份代號: I07.SI) N OT IF IC ATI ON LET TE R 通 知 信 函 Dear Registered Shareholder, 29 September 2025 ISDN HOLDINGS LIMITED (the "Company") – Notice of Publication of 2025 Interim Report (the "Current Corporate Communications") Both English and Chinese versions of the Company's Current Corporate Communications are available on the Company ...