Feed control act Article 12

A feed/feed additive Manufacturing license or Import license shall be valid for four years. Where manufacturing or importing is to continue after said certificates expire, the manufacturer/importer shall first apply to the competent authority in advance for an extension. Such an extension shall not exceed four years each time.If a feed/feed additive Manufacturing license or Import license is lost or damaged, the person concerned shall state the reasons clearly, pay a registration fee, and apply to the original issuing authority for replacement or renewal. Where the original certificate is lost, the person concerned shall apply to have the original canceled; where the original certificate is damaged, the person concerned shall submit the original for it to be canceled.
中文原文 飼料管理法第12條
飼料或飼料添加物之製造登記證或輸入登記證有效期間為四年,期滿仍須繼續製造或輸入者,應先期申請主管機關核准展延,展延期限每次不得超過四年。
飼料或飼料添加物製造登記證或輸入登記證遺失或損壞時,應敘明理由,並繳納證書費,向原核發登記證機關申請補發或換發。
遺失者應申請將原證註銷,損壞者應將原證繳銷。

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