Regulations Governing the Customs Management of Import and Export Warehouses Article 16

Cargoes unloaded shall be piled up according to their bills of lading (or airway bills) or delivery orders, respectively, and shall not be mixed up.Where the warehouse placed under the autonomous management system by the Customs and the cargo storage position is controlled by a computer system, the Customs may conduct an online audit at anytime it shall deem necessary, and the limitations of the preceding paragraph shall not apply.
中文原文 海關管理進出口貨棧辦法第16條
存倉貨物應依提單或提貨單分別堆置,不得相混。
經海關核准實施自主管理之貨棧,貨物之儲存以電腦自動化控管儲位,海關可於線上隨時查核者,得不受前項之限制。
但同一棧板上不得放置不同提單之貨物。

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