Administrative Procedure Act Article 90

For service to be executed at the domicile or residence or business office of a person enjoying extraterritorial privileges, request may be addressed to the Ministry of Foreign Affairs for such purpose.
中文原文 行政程序法第90條
於有治外法權人之住居所或事務所為送達者,得囑託外交部為之。

English translation for reference only; the Chinese text prevails. Not legal advice.