9902.11.33 - Poly{(azacyclotridecan-2-one)-co-(1,3-benzenedicarboxylic acid; 1,4-benzenedicarboxylic acid)-alt-(4,4'-methylenebis[2-methylcyclohexanamine])} (CAS No. 62694-40-0) (provided for in subheading 3908.90.70)

This HTS classification, 9902.11.33, pertains to a specific type of polymer, Poly{(azacyclotridecan-2-one)-co-(1,3-benzenedicarboxylic acid; 1,4-benzenedicarboxylic acid)-alt-(4,4'-methylenebis[2-methylcyclohexanamine])}, identified by CAS No. 62694-40-0. This designation is crucial for imported goods falling under temporary legislation and special provisions, as indicated by its placement within Chapter 99. Its purpose is to track specific imported materials that may be subject to unique trade agreements or additional import restrictions, separate from the general tariff classifications found in earlier chapters.

Distinguishing this category from its siblings is paramount. While other HTS codes in chapters like 01, 02, or 39 would classify standard goods such as live animals or general polymers, this code is reserved for items with specific, temporary trade implications. It is nested within Chapter 99, which acts as a repository for goods subject to special, often time-limited, tariff treatments or import controls, differentiating it from the primary classification system of goods.

As a leaf node, HTS code 9902.11.33 has no further subcategories. Therefore, classification at this level requires precise identification of the specific polymer described. Importers must ensure that the chemical identity and CAS number precisely match the description provided to ensure accurate customs declaration. This specificity is critical for ensuring compliance with the temporary legislation and trade agreements under which this classification operates.