Enforcement Rules of the Classified National Security Information Protection Act Article 14

The downgrading authority prescribed in Article 10, Paragraph 1 of this Act, shall be exercised by the more superior agency between the original classification authority or the agency attempting to downgrade the information.Whoever wants to downgrade classified information by application prescribed in Article 10, Paragraph 1 of this Act, shall submit an application for downgrading to the original classification authority.When a person submits a declassification or downgrading application prescribed in Article 10, Paragraph 1 of this Act, the original classification authority shall decide within 30 days whether to declassify or downgrade that information. If our country is at war, the original classification authority shall decide within 10 days whether to declassify or downgrade that information.
中文原文 國家機密保護法施行細則第14條
本法第十條第一項所定國家機密等級之變更,由原機密等級與擬變更機密等級二者中較高機密等級之有核定權責人員核定。
依本法第十條第一項規定申請變更機密等級者,應向原核定機關為之。
依本法第十條第一項規定申請解除國家機密或變更其等級者,有核定權責人員應於接獲申請後三十日內核定;戰時,於十日內核定之。
本法第十條第一項所定註銷、解除國家機密或變更其等級之作業程序,應按異動前後較高之機密等級先行採取保密措施。

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