The Weights and Measures Act Article 27

Legal measuring instrument that have passed type approval shall be issued with a type approval certificate, and made known to the public per a public notice.At least six months prior to the expiration of the type approval certificate, the original applicant or its successor may apply to the dedicated weights and measures authority for a re-examination and issuance of a renewed type approval certificate.
中文原文 度量衡法第27條
法定度量衡器經型式認證認可者,應發給認可證書,並公告之。
型式認證證書有效期間屆滿六個月前,原申請人或其繼受人得向度量衡專責機關申請重新審查換發認可證書。

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