Customs Act Article 54

I. The duty-payer may hold a carnet instead of import or export declaration form in order to clear Customs for temporary admission of goods. Where the goods are re-exported or re-imported within the period of validity, such goods may be exempted from customs duty. In the case that the goods are not re-exported within the time limit, the institution acting as guarantor as prescribed in the carnet shall pay the duty in place of the duty-payer; where the goods are re-imported after the aforesaid period, the customs duty shall be levied according to this Act.II.Regulations governing the scope of goods applicable to temporary admission, the guarantee liabilities of the guarantor institution, the endorsement, issuance, and management as well as other required matters, shall be prescribed by the MOF.
中文原文 關稅法第54條
納稅義務人得以暫准通關證替代進口或出口報單辦理貨物通關,該貨物於暫准通關證有效期限內原貨復運出口或復運進口者,免徵關稅。
逾期未復運出口者,其應納稅款由該證載明之保證機構代為繳納;逾期復運進口者,依法課徵關稅。
適用暫准通關證辦理通關之貨物範圍、保證機構之保證責任、暫准通關證之簽發、管理及其他應遵行事項之辦法,由財政部定之。

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