Regulations Governing the Offsetting or Refund of Duties and Taxes on Raw Materials for Export Products Article 19

In the event duties and taxes on export-oriented raw materials charged to account cannot be offset within the prescribed time limit in the preceding Article, such outstanding duties and taxes shall be paid immediately. The amount of duties/taxes to be made up shall be calculated based on the duty-paying value and rate determined according to the duty code at the time when the raw materials were imported and shall be marked on the guarantee sheet of charge to account by the authority in charge.
中文原文 外銷品沖退原料稅辦法第19條
記帳之外銷品原料稅不能於前條規定期限內沖銷者,應即補繳稅款,其稅款金額之計算,應以該項原料進口當時依關稅法核定之完稅價格及稅率為準,並由經辦機關於記帳保證書內註明。

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