About this tool

A U.S. import classification tool built for Chinese-speaking users. You describe a product; it works through the Harmonized Tariff Schedule heading by heading, applies the General Rules of Interpretation and returns candidate lines with reasoning, plus flags for Section 301 / 232 / 201 and AD/CVD measures.

Tariff text comes from the USITC's official HTSUS release and is refreshed with each official revision. Candidates can only be chosen from real tariff lines; the model cannot invent a number.

Data version

HTSUS

Rev.21 · 2026-10-18.12

Statistical lines

20242

Models

anthropic: claude-haiku-5-5 → claude-sonnet-5-5

AI-generated suggestion based on HTSUS text, not legal advice. Final classification rests with CBP rulings or licensed advice; the importer of record is responsible for the entry.