Feature	Description
Official name	Harmonized Tariff Schedule of the United States (HTSUS)
Maintained by	U.S. International Trade Commission (USITC)
Purpose	Classifies imported goods and applies U.S. tariff treatment
Primary use	Customs entry, duty calculation, tariff compliance, import planning
HS-6 root	853180

1 Use HTSUS 8531.80.90.26 when entering imported goods into the United States.

2 Use it when calculating duty rates, special program eligibility, or quota treatment for imports.

3 Use it when matching an import tariff line to the related Schedule B export family at HS-6.

4 Use it when customs brokers, trade counsel, or compliance teams need the exact tariff classification.