Regulations for Administration on Contracted Public Stock Keeper Article 30

After terminating the entrusted contract and confirming with the Branch, CPSK may request for returning his or her property guarantees, or cancelling the registration for pledge or mortgage once he or she settles up for rice collections, materials and other various debts.
中文原文 公糧業者管理辦法第30條
公糧業者於終止委託契約後,應俟收儲之公糧稻米、物資及其他各項債務結清,並經契約雙方確認後,始得向分署請求發還其擔保物品及塗銷抵押權或質權設定登記。

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