Commodity Labeling Act Article 14

The competent authority in a municipality government or a county (city) government may, from time to time, conduct spot checks on the commodity that are introduced to the market for sale. The seller shall not evade, impede or refuse and shall provide relevant information.In order to ensure that the commodities are labeled in accordance with the provisions of this Act, the competent authority in a municipality government or a county (city) government may dispatch its personnel to the manufacturer, contractor, importer, distributor and other premises where the commodities are manufactured, stored or distributed. The manufacturers, contractor, importer, distributor or the person in charge of the former premises shall not evade, impede or refuse and shall provide relevant information.The representatives of the competent authority in a municipality government or a county (city) government shall present justification documents in performing their duties according to the preceding two paragraphs.
中文原文 商品標示法第14條
直轄市或縣(市)主管機關得不定期對流通進入市場之商品進行抽查,販賣業者不得規避、妨礙或拒絕,並應提供相關資料。
為確保商品符合本法規定,直轄市或縣(市)主管機關得派員至製造商、委製商、進口商、分裝商或其他製造、存放或分裝商品之場所檢查;製造商、委製商、進口商、分裝商或前開場所負責人不得規避、妨礙或拒絕,並應提供相關資料。
直轄市或縣(市)主管機關所屬人員執行前二項職務時,應出示證明文件。

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