Enforcement Rules of the Classified National Security Information Protection Act Article 34

When classified information is eligible for declassification under Article 28 or Article 29 of this Act, the original classification authority or the authorized official shall decide within 10 days whether to declassify that information.
中文原文 國家機密保護法施行細則第34條
依本法第二十八條或本法第二十九條規定解除國家機密者,有核定權責人員應於接獲報請後十日內核定之。

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