Enforcement Rules of Professional Engineers Act Article 9

If a professional engineer voluntarily suspends the professional practice or is subject to a practice suspension penalty, and the central competent authority nullifies the professional engineer license, the applicant for resumption of practice and issuance of a new license shall, if the original license has not yet expired, submit the documents and license fee in accordance with the provisions of Article 4 and apply to the central competent authority. However, if the application for the license does not involve adding new engineering branches, the verified documents of years of service as prescribed in Article 4, Paragraph 1, Subparagraph 2 may be exempted. Upon successful review, the new license will be issued for the remaining validity period of the original license.For the professional engineer whose professional engineer license validity period has expired, the application in the preceding Paragraph for the renewal of the professional engineer license shall be in accordance with Regulations for Renewal of Professional Engineer Licenses.
中文原文 技師法施行細則第9條
技師自行停止執業或受停止業務處分,經中央主管機關註銷執業執照,申請恢復執業發給執業執照者,如原執業執照效期尚未屆滿,應依第四條規定檢附文件及執照費,向中央主管機關提出申請。
但申請執業執照無新增科別,得免附第四條第一項第二款服務年資證明文件。
經審查合格者,以原執業執照效期發給執照。
前項申請,原執業執照效期已屆滿者,應依技師執業執照換發辦法規定,申請換發執業執照。

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