Personal Property Secured Transactions Act Article 9

The effective period of registration of a personal property secured transaction shall be as stipulated by the contract; if not stipulated by the contract, it shall be one year from the date of registration. Within 30 days before the end of that period, the creditor may apply for an extension of the registration period, which shall be effective from the day following the end of the original registration period.The effective period of an extension of the registration period as stipulated in the preceding paragraph shall not exceed one year.The registration authority shall handle the extension of the registration period in accordance with Articles 7 and 8 and notify the debtor. If the subject property is owned by a third party, the third party shall also be notified.
中文原文 動產擔保交易法第9條
動產擔保交易之登記,其有效期間從契約之約定,契約無約定者,自登記之日起有效期間為一年,期滿前三十日內,債權人得申請延長期限,其效力自原登記期滿之次日開始。
前項延長期限登記,其有效期間不得超過一年。
登記機關應比照第七條及第八條規定辦理,並通知債務人,標的物為第三人所有者,應併通知之。

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