Juvenile Justice Act Article 23

A companion letter shall be executed by a process-server, a judicial police officer, or the judicial police.Three (3) copies of the companion letter shall be made, one delivered to the person under companion, and another to his/her designated relatives or friends upon execution; the execution shall take into consideration the companion’s physical integrity and reputation of the person under companion.Upon the execution of companion, the place, date, month and year of such an execution shall be recorded in the companion letter; where an execution may not be completed, the executor shall sign and specify the situation in the companion letter concerned, and submit it to the juvenile court.
中文原文 少年事件處理法第23條
同行書由執達員、司法警察官或司法警察執行之。
同行書應備三聯,執行同行時,應各以一聯交應同行人及其指定之親友,並應注意同行人之身體及名譽。
執行同行後,應於同行書內記載執行之處所及年、月、日;如不能執行者,記載其情形,由執行人簽名提出於少年法院。

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