Enforcement Rules of the Classified National Security Information Protection Act Article 22

If a document containing classified information requires the processing official to affix a seal to the document, the processing official shall bring the seal and affix it to the document personally. The official who monitors the seal-affix process shall sign his or her name and affix the seal of authority for authentication without reviewing the content of the document.
中文原文 國家機密保護法施行細則第22條
國家機密文書用印,由承辦人員親自持往辦理。
監印人憑主管簽署用印,不得閱覽其內容。

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