Act for the Establishment and Administration of Technology Industrial Parks Article 26

Businesses in the Parks may store, display, modify, process their goods, and perform other treatments. However, accounts shall be kept to record the quantities and monetary amounts of inbound and outbound goods in detail for auditing by the Bureau or its branch offices and the customs.The goods mentioned in the preceding paragraph may be stored in the Parks indefinitely. If the goods are defective, a report shall be submitted to the Bureau or its branch offices for carrying out examination in conjunction with the customs and tax collection agencies. The goods may be deducted from the accounts once the case is confirmed and where this is a legitimate reason.
中文原文 加工出口區設置管理條例第26條
區內事業得將其貨品在園區內,作有關業務之儲存、陳列、改裝、加工製造及他項處理。
但應具備帳冊,分別詳細記載貨品出入數量及金額,以供園管局或分局及海關稽核。
前項貨品,得在園區內無限期儲存;如有缺損,應於十五日內申述理由,報請園管局或分局會同海關及稅捐稽徵機關查驗,經查明屬實,並有正當理由者,准在帳冊內減除。

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