Prepackaged products to be designated per public notice shall be labeled with the information of net quantity, expressed using the legal units of measurement. The difference between the labeled quantity and the actual quantity shall not exceed the statutory range of tolerance.
Regulations governing the categories, labeling, sampling, and relevant administration matters concerning pre-packed products subject to control shall be prescribed by the competent authority.
The range of tolerances allowed for pre-packed products as referred to in Paragraph One of this Article and other technical specifications shall be prescribed and published by the dedicated weights and measures authority.

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.

The distributors, manufacturers (producers) and importers of prepackaged products shall cooperate with the random sampling tests to be conducted under the preceding Article, without evading, impeding or refusing such activities.
A statement indicating the categories and quantities of samples taken in the course of the random sampling testing referred to in the preceding Paragraph shall be issued.

For any prepackaged products designated per public notice to be subject to control that have failed random sampling tests, the manufacturer or the importer thereof may apply for another sampling test and shall bear the costs arising from such re-sampling test.