Regulations Governing Monitoring Inspection Article 24

The term of the validity, if required, must be indicated in the monitoring inspection certificate beginning from the date of issuance.
中文原文 商品監視查驗辦法第24條
查驗證明應規定有效期間者,其有效期間自發證之日起算。

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