2620.99.75.90 - Other materials that do not contain vanadium, silver or gold

This HTS classification, 2620.99.75.90, encompasses a diverse range of residual materials, primarily slag, ash, and similar industrial byproducts, that do not contain significant amounts of vanadium, silver, or gold. These materials must not have undergone any processing to advance their value or condition, and are typically not intended for the recovery of copper, lead, or zinc if they contain over 2 percent by weight of these metals. The scope is broad, covering any remaining waste materials from various industrial processes that meet these specific compositional and preparatory criteria.

The defining characteristic of this category is the *absence* of certain precious and industrially significant metals that are specifically accounted for in sibling classifications. While 2620.99.75.60 specifically covers materials containing silver, and 2620.99.75.80 pertains to those containing gold, this category is for residues that fall outside these specific precious metal inclusions. Therefore, the critical distinction lies in the quantitative presence of vanadium, silver, or gold, which, if present above certain de minimis thresholds or as the primary valuable component, would lead to classification under a different subheading.

As this is a leaf node within the HTS structure, there are no further subdivisions. Classification under 2620.99.75.90 is final for materials meeting the criteria of being residual slag, ash, or similar materials, not advanced in value or condition, and specifically devoid of notable vanadium, silver, or gold content. Importers and exporters should carefully review the chemical composition and physical state of their residual products to ensure accurate classification, paying close attention to the exclusion of the aforementioned valuable metals.