Regulations Governing Customs Clearance for Goods in Free Trade Zones Article 7

In the case of transactions conducted among free-trade-zone enterprises within the free trade zone in accordance with Paragraph 3 of Article 17 of the Act, the free-trade-zone enterprise shall report such transactions to Customs by electronic transmission of the declaration form.
中文原文 自由貿易港區貨物通關管理辦法第7條
依本條例第十七條第三項規定,自由港區事業貨物區內交易,由自由港區事業傳輸報單向海關通報。

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