Professional Engineers Act Article 12

A professional engineer who voluntarily suspends professional practice shall, within thirty days from the date of suspension, submit the professional engineer license and apply to the central competent authority for the nullification of their professional license.
中文原文 技師法第12條
技師自行停止執業者,應自停止執業之日起三十日內,檢具執業執照,向中央主管機關申請註銷其執業執照。

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