Regulations Governing the Recognition of Designated Laboratory for Measuring Instrument Article 8

The validity period of a recognition certificate of a designated laboratory is three years commencing from the date of issuance. Within six to two months prior to the expiration date of the original certificate, a designated laboratory should fill out an application form, and submit it enclosed with relevant documents, the assessment fee and certification fee to the dedicated weights and measures authority to apply for renewal. If the laboratory passes the reassessment, a renewed recognition certificate shall be issued.The validity period of a renewed recognition certificate as referred to in the preceding Paragraph is three years commencing from the day after the expiration date of the original certificate. Nonetheless, if application for renewal is filed within two months before the expiration date of the original certificate and reassessment is finished after the expiration date, the validity period of the renewed certificate is three years commencing from the date of issuance.
中文原文 度量衡器指定實驗室認可管理辦法第8條
指定實驗室認可證書有效期間為三年,自發照日起算;有效期間屆滿之日前六個月至二個月間,指定實驗室得填具申請書,連同評鑑費及證照費,並檢附相關資料,向度量衡專責機關申請延展;經再評鑑通過者,換發認可證書。
前項換發認可證書之有效期間自原認可證書屆滿次日起算三年。
但於有效期間屆滿前二個月內申請換發,且未能於認可證書屆滿前完成換發者,其有效期間自發照之日起算三年。

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