Conclusion of Treaties Act Article 2

This Act shall apply when competent administrative authorities of the central government, or authorized institutions and organizations, conclude treaties or agreements with foreign governments, international organizations, or foreign institutions and organizations authorized by their government.
中文原文 條約締結法第2條
中央行政機關或其授權之機構、團體與外國政府、國際組織或外國政府授權之機構、團體締結條約或協定,依本法之規定。

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