Regulations Governing the Participation of Foreign Suppliers in the Procurement Not Subject To Any Treaties Or Agreements Article 5

When conducting a non-treaty/agreement procurement, an entity may, based upon actual needs, provide in the tender documentation that foreign suppliers are permitted to participate in tendering.
中文原文 外國廠商參與非條約協定採購處理辦法第5條
機關辦理非條約協定採購,得視實際需要於招標文件中規定允許外國廠商參與。

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