Regulations Governing the CNS Mark Article 17

For CNS Mark products that are granted certification marks designated and announced by the standards authority and the registration is valid, the test reports used for maintaining those certification marks and issued within three years may be used and the same test items may be waived if they are required by the relevant national standards. Other test items not waived shall be performed in accordance with the standards.
中文原文 正字標記管理規則第17條
正字標記產品取得標準專責機關公告指定之其他驗證標誌且登錄持續有效者,得以該驗證標誌三年內之產品試驗報告,免除前條第一項或第二項符合國家標準規定之檢驗項目;未免除檢驗之項目,仍應依規定檢驗。

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