The regulations for procurement of services relating to the investigations, research and excavation Article 7

If a supplier still has other uncompleted procurement contract when participating in tendering for archeological sites, the supplier shall specifically explain its performance ability aiming at the procurement and provide an affidavit or other relevant certificates.
中文原文 考古遺址調查研究發掘採購辦法第7條
廠商於參與考古遺址之採購投標時,尚有其他採購契約未完成履約者,應提出採購案執行能力之具體說明,並檢附切結書或其他有關證明文件。

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