Administrative Procedure Act Article 86
Service in a foreign nation shall be executed by request for such purpose to be addressed to the competent government agency of that nation or the embassy, minister, consulate or any other institution or organization of the Republic of China residing in that nation.If no service can be effected as required by the preceding paragraph, the document may be served by delivering it to a post office to be sent by a registered mail, return receipt requested, and the return receipt shall be filed.
中文原文 行政程序法第86條
於外國或境外為送達者，應囑託該國管轄機關或駐在該國之中華民國使領館或其他機構、團體為之。
不能依前項規定為送達者，得將應送達之文書交郵政機關以雙掛號發送，以為送達，並將掛號回執附卷。
不能依前項規定為送達者，得將應送達之文書交郵政機關以雙掛號發送，以為送達，並將掛號回執附卷。