Administrative Procedure Act Article 78

In any of the following circumstances, an administrative authority may, upon application, permit service by publication:1. If the place of service is unascertainable;2. If service has been attempted at the place of domicile or residence or business office of a person entitled to extraterritorial privileges, and is of no avail; or3. If service is intended to be executed in a foreign nation or outside the Republic of China but cannot be done so in the manner required by article 86 hereof or it is foreseeable that in spite of efforts to be made in accordance with said article such efforts would be rendered abortive.Where no application for service by publication has been made by any person under any of the circumstances specified in the preceding paragraph, the administrative authority may order ex officio that service be executed by publication if it deems necessary to do so in order to avoid possible delay of the administrative procedure.If any of the circumstances specified in the preceding paragraph occurs as a result of the failure of the party to give the administrative authority a notice of change of the location where service upon him should be made, the administrative authority may order ex officio that the service be executed by publication.