Organization Act of the Armaments Bureau of the Ministry of National Defense Article 4

The Bureau shall have one Director General, whose position shall be 13th grade of Selected Appointment Rank, or at the rank of lieutenant general .Two Deputy Directors General, whose position shall be 12th grade of Selected Appointment Rank,or at the rank of major general.
中文原文 國防部軍備局組織法第4條
本局置局長一人,職務列簡任第十三職等或中將;副局長二人,職務列簡任第十二職等或少將。

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