Enforcement Rules of the Government Procurement Act Article 54-1

Where an entity does not set a government estimate pursuant to subparagraphs 1 and 2 of paragraph 1 of Article 47 of the Act, it may specify in advance in the tender documentation the contract value or relevant rate as the terms of awarding the contract.
中文原文 政府採購法施行細則第54-1條
機關辦理採購,依本法第四十七條第一項第一款及第二款規定不訂底價者,得於招標文件預先載明契約金額或相關費率作為決標條件。

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