3814.00.20.00 - Containing more than 25 percent by weight of one or more aromatic or modified aromatic substances

This HTS category, 3814.00.20.00, encompasses organic composite solvents and thinners, which are specifically defined by their high aromatic content. These products are formulated for use in dissolving or diluting paints, varnishes, lacquers, or other coatings. The key classification criterion is that these solvents and thinners must contain **more than 25 percent by weight of one or more aromatic or modified aromatic substances**. Examples might include specialized industrial degreasers or potent thinning agents used in advanced coating applications where strong solvency is required.

It is crucial to distinguish this category from its sibling, 3814.00.10.00. While both cover organic composite solvents and thinners, 3814.00.10.00 applies to those containing a lower proportion of aromatic substances, specifically between 5 percent and 25 percent by weight. The category 3814.00.50, labeled "Other," would cover composite solvents and thinners that do not meet the specific aromatic content thresholds of the other subheadings within 3814.00.

As this HTS code represents a leaf node, there are no further subcategories under 3814.00.20.00. Classification at this level is definitive based on the specified aromatic content. Therefore, importers and exporters must carefully analyze the composition of their organic composite solvents and thinners to ensure accurate classification according to the percentage of aromatic or modified aromatic substances by weight.