# HTS 9902.11.31: Micro-porous, ultrafine, spherical polyamide powders of polyamide 6 (CAS No. 356040-79-4), polyamide-12 (CAS No. 338462-62-7) and polyamide 6, 12 (CAS No. 356040-89-6) (provided for in subheading 3908.10.00 or 3908.90.70)

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free
- **Special / FTA rate:** No change
- **Column 2 rate:** No change
- **Corpus rank:** #5297 of 5979 among duty-free tariff lines

## Classification path

- **Section XXII:** [Special Classification Provisions](https://plaintariff.com/section/xxii-special-classification-provisions)
- **HTS code:** 9902.11.31

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/99021131-micro-porous-ultrafine-spherical-polyamide-powders-of-poly*