4106.31.90.00 - Other

This classification, HTS Code 4106.31.90.00, encompasses tanned or crust skins of swine that are in a wet state, specifically those referred to as "wet-blue." These skins have undergone the tanning process, which preserves them and alters their chemical and physical properties, typically using chromium salts, resulting in a characteristic blue coloration. The "wet state" designation indicates that these skins retain a significant moisture content, are pliable, and are ready for further processing such as drying, finishing, or splitting.

This category specifically distinguishes itself from its sibling, 4106.31.10.00, by encompassing all wet-blue swine skins *other than* those explicitly designated as "wet blues" in the preceding sibling category. While the sibling category may be intended for the initial entry or primary presentation of wet-blue skins, this "Other" category serves as a catch-all for any wet-blue swine skins that do not fit the specific criteria or are presented in a manner not explicitly covered by the sibling. Both categories fall under the broader scope of tanned or crust skins of swine in the wet state, signifying a particular stage of leather processing.

As a leaf node, HTS Code 4106.31.90.00 does not have further subdivisions. Therefore, classification into this code hinges on meeting the criteria of being a tanned or crust skin of swine, in a wet state, and not being specifically classified under the "wet blues" sibling category. Examples would include wet-blue swine hides that might have minor deviations in size, quality grading, or presentation that do not warrant their exclusion from this general classification but differentiate them from the primary "wet blues" designation.