The Enforcement Rules of the Specifically Selected Goods and Services Tax Act Article 27

If, after its release from factory, a taxed specifically selected good of Article 2, paragraph 1, subparagraphs 2 to 6 of the Act is for any reason returned to the original factory, the manufacturer may on its own arrange the return shipment on the basis of the return shipping order and proceed as follows:1. Re-sorting: When there is no change in the quality, appearance, shape, and selling price of the returned specifically selected good after re-sorting, it is exempt from the tax on re-release from the factory.2. Refitting and reprocessing: The manufacturer, after applying in advance and receiving approval from the competent tax authority of the location of the factory, shall use the documentary evidence of payment of the tax to seek a tax refund or to offset the tax paid against relevant fees. When the refitting or reprocessing is completed, the manufacturer shall declare and pay the taxes due on the refitted or reprocessed good at the same time as for the taxable specifically selected goods released from the factory during the given month.
中文原文 特種貨物及勞務稅條例施行細則第27條
本條例第二條第一項第二款至第六款規定之已稅特種貨物出廠後,因故退回原廠者,得憑退貨交運單等文件自行退運,並依下列規定辦理:
一、退廠整理:退廠整理後該特種貨物之品質、外觀、形狀及售價均未變更,准免稅復運出廠。
二、改裝改製:產製廠商應事先申請工廠所在地主管稽徵機關核准後,憑完稅證明文件退稅或抵繳;俟改裝改製完竣後,再併同當月份出廠應稅特種貨物,報繳應納稅款。

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