2620.99.75 - Other materials which are residues not advanced in value or condition by any means, and which if containing over 2 percent by weight of copper, lead or zinc are not to be treated for the recovery thereof

This classification, HTS Code 2620.99.75, encompasses miscellaneous residues and waste materials, not otherwise specified, that are not significantly advanced in value or condition. A crucial defining characteristic is that these materials, even if they contain more than 2 percent by weight of copper, lead, or zinc, are not intended for the recovery of these specific metals. This implies they are either byproducts of processes where these metals are not the primary recovery target or have undergone some processing that renders direct recovery uneconomical or impractical.

Distinguishing this subcategory from its siblings, HTS 2620.99.75 primarily covers materials that do not fall under the specific vanadium, tungsten, nickel, or titanium-rich exclusions found in other 2620.99 categories. For instance, while 2620.99.10.00 specifically addresses materials "containing mainly vanadium," this category addresses general "other" residues that lack such a predominant metal constituent or are not destined for their recovery. Similarly, it differs from 2620.99.50.00 by not specifically relating to slag containing over 40 percent titanium.

The existence of subcategories, such as 2620.99.75.20 for "Vanadium bearing materials," indicates that further granularity within this "other" category is provided based on specific metal content or intended recovery. This allows for more precise classification of residues where vanadium might be present, but not to the extent of being the "main" constituent as defined in a higher sibling category. The subcategories help refine the classification by identifying specific secondary or trace metal interests.