Government Procurement Act Article 27

For open tendering procedures or selective tendering procedures, an entity shall publish a notice of invitation to tender or of qualification review on the Government Procurement Gazette, and also make it available on the information network. The same shall also apply if the notice is amended.The content of a notice, the number of days for publication, means of publication, and the regulations for publication of the Government Procurement Gazette referred to in the preceding paragraph shall be prescribed by the responsible entity.Procuring entities shall estimate the number of procurement to be conducted and the value of each procurement. The budget and the estimated value of a procurement may be disclosed in the tender notice.
中文原文 政府採購法第27條
機關辦理公開招標或選擇性招標,應將招標公告或辦理資格審查之公告刊登於政府採購公報並公開於資訊網路。
公告之內容修正時,亦同。
前項公告內容、公告日數、公告方法及政府採購公報發行辦法,由主管機關定之。
機關辦理採購時,應估計採購案件之件數及每件之預計金額。
預算及預計金額,得於招標公告中一併公開。

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