Business Operation Licensing and Administration Regulations of Measuring Instrument Enterprises Article 15

Businesses obtaining the business license of measuring instrument manufacturer or repairer with taximeters shall retain the records of repair, including trademark, model, serial number, license plates, summary of repair, and the name of the component replaced.The records of repair referred to in the preceding Paragraph shall be kept for the last two years or more within the validity period of business license for the review of the dedicated weights and measures authority. If the records are not kept, a time limit may be set for correction.
中文原文 度量衡業營業許可及管理規則第15條
領有度量衡製造業或修理業營業許可執照且經營計程車計費表者,執行修理業務時,應保存修理紀錄,內容應包括修理器具廠牌、型號、器號、車號、修理情形摘要及更換零組件名稱。
前項修理紀錄於營業許可執照有效期間應保存最近二年以上,供度量衡專責機關查核;未保存修理紀錄者,度量衡專責機關得通知限期改正。

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