The Weights and Measures Act Article 46

In order to ensure the compliance of prepackaged products with the provisions of the preceding Article, the dedicated weights and measures authority may send its staff to the following places to conduct random sampling tests on a non-periodical basis:1. the place of display and sale of products;2. the production premises or storage places where the commodities subject to control are produced; and 3. the storage places of importers.
中文原文 度量衡法第46條
度量衡專責機關為確保定量包裝商品符合前條之規定,得不定期派員至下列場所抽測:
一、陳列銷售之經銷場所。
二、生產者之廠場或倉儲場所。
三、輸入業者之倉儲場所。

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