Chapter 91, Additional U.S. Note 4 of the HTSUS, pertains to marking requirements for which products?

Chapter 91 of the Harmonized Tariff Schedule of the United States (HTSUS) focuses on marking requirements specifically for clocks and watches. These products have unique identification and labeling needs due to their complex nature and the importance of brand identity in the market. The additional notes in this chapter outline specific mandates regarding how these items should be marked or labeled to ensure compliance with U.S. customs regulations.

The rationale for this is that accurate marking is critical for consumer awareness and for the enforcement of trade regulations. Clocks and watches often have intricate components and varying levels of craftsmanship, making clear labeling necessary for both functionality and regulation. Proper marking can help facilitate transparency in the supply chain and protect both consumers and manufacturers.

Other product categories, such as electronics, apparel, and pharmaceuticals, are governed by different chapters in the HTSUS that address their specific marking and labeling requirements. Thus, Chapter 91’s focus on clocks and watches distinctly differentiates it from the provisions applicable to other categories of goods.