Regulations Governing Customs Bonded Factories Article 30-1

If the sample of finished goods imported by the bonded factory needs to be re-exported, it may be handled in accordance with Article 52 of the Customs Act, and if the bonded factory promises to re-export the goods within 6 months after its release by providing an affidavit, the guarantee equivalent to the amount of the tax can be exempted. If the aforementioned goods is not re-exported within the aforementioned period, an application for payment of duty shall be submitted within 10 days following the expiration of the period.The bonded factory shall record the sample of finished goods as referred to in the preceding Paragraph in the books and ledgers for customs inspection and shall not cut or destroy the goods before re-export.
中文原文 海關管理保稅工廠辦法第30-1條
保稅工廠進口成品貨樣,需復運出口者,得依關稅法第五十二條規定辦理,並由保稅工廠具結保證於放行之翌日起六個月內復運出口,免提供相當稅款金額之擔保。
不依規定期限復運出口者,應於期限屆滿之翌日起十日內繕具報單補稅。
前項成品貨樣,保稅工廠應登列帳冊控管以供海關查核,且不得於復運出口前剪裂、破壞。

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