Government Procurement Act Article 107

An entity shall, in addition to the documents kept pursuant to the requirements of the Accounting Act or other laws, keep a copy of the procurement documents at a place designated by the responsible entity.
中文原文 政府採購法第107條
機關辦理採購之文件,除依會計法或其他法律規定保存者外,應另備具一份,保存於主管機關指定之場所。

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