Regulations for Handling Disputes over the Application and Evaluation Procedures for Cases Concerning Private Participation in Infrastructure Projects Article 29

After lodging a complaint, the complainant may withdraw the complaint before a review decision is served. Once a complaint has been withdrawn, the same complaint cannot be lodged again.Where a complaint has been withdrawn, the Complaint Review Board shall conclude the review procedure and notify the complainant and the authority in charge thereof.
中文原文 民間參與公共建設申請及審核程序爭議處理規則第29條
申訴提出後,申訴人得於審議判斷送達前撤回之。
申訴經撤回後,不得再行提出同一之申訴。
申訴事件經撤回者,申訴會應即終結審議程序,並通知申訴人及主辦機關。

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