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Mussel Byssus Threads

Dried byssus (beard) threads from mussels, unfit for food, used in biotech or textiles. Under HTS 0511.91.00.90 as other mollusc products.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

5111.11Same rate: 35%

If spun into yarn

Textile processing moves to Chapter 51 if wool-like.

3504.00.10Lower: 22.5% vs 35%

If protein isolates

Purified proteins classify in Chapter 35.

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Import Tips & Compliance

• Clean of flesh to confirm non-edible

• Patents or research docs support industrial use

• Small volume imports easier

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