Regulations Governing Customs Clearance for Goods in Free Trade Zones Article 27

When Customs considers, with justifiable reasons, that an act violates this Act, or it is necessary to initiate an inspection into or investigation of any particular matter subject to its autonomous management, Customs may dispatch customs officers from time to time to inspect (investigate) the goods and relevant documents, accounting books, receipts, corresponding letters, and computer files, whereas the party subject to such inspection/investigation shall cooperate with the investigation and shall provide necessary assistance. Where the circumstances require needs, the customs officers may take samples, product catalogs, and/or instruction books or manuals.When carrying out the inspection/investigation task, the customs officers shall wear uniforms or show any credentials sufficient to justify their identification, and shall advise the parties subject to such inspection/ investigation of the same. The processes of such inspection/investigation conducted by the customs officers shall be recorded in writing, and Customs shall have the written records to be reviewed by all related persons at the scene, and shall cause the same to be affixed with the signature or personal seal of one of such related persons and of one of the inspecting/investigating customs officers. Where the related persons are unable to or refuse to affix a signature or personal seal, the cause thereof shall be annotated in the written record. In the case of the inspection/investigation of the goods or sampling operation conducted by Customs, Article 23 of the Customs Law shall apply mutatis mutandis.
中文原文 自由貿易港區貨物通關管理辦法第27條
海關有正當理由認為有違反本條例之情事或就自主管理事項認有進行查核之必要者,得隨時派員查核(驗)貨物及其相關文件、帳冊、單據、信件、電腦檔案等資料,被查核人應予配合並給予必要之協助;必要時並得提取貨樣、型錄或說明書等。
海關實施查核時應著制服或提示足以證明其身分之憑證,並應告知被查核人。
海關執行查核應將經過情形作成書面紀錄交在場關係人閱覽後,由其中之一人會同海關一同簽名或蓋章;如有不能簽名蓋章或拒絕簽名蓋章者,應記明其事由。
海關查核(驗)貨物或提取貨樣準用關稅法第二十三條規定。

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