Type a chemical, a CAS number or a product code, and Sourzi puts every check it can run on one card: the chemical register, the duty, anti dumping cases and the supplier.
Each row shows the official file it came from and the date of that file. Where Sourzi does not hold the answer, the row says so instead of guessing.
China to the United States
Zinc
CAS 7440-66-6 · Product code 7901.11 · Full CAS page
Nothing on file flags this chemical, but 2 rows are gaps to confirm before you order.
TSCA (US register)
Listed
CAS 7440-66-6 is on the TSCA inventory (ACTIVE), the US chemical register.
Product code 790111 has no line in the stored US tariff file, which covers chapters 28 to 39.
USITC tariff extract · file dated 25 Sep 2026
Section 301 (China)
Not stored
Sourzi does not store the Section 301 rate on goods of China yet, so this row is a gap, not a guess. Confirm the rate with your customs broker before you price the order. No stored Section 301 exclusion matches this code.
Add the supplier's company name to screen it against the DFAT sanctions list and the US UFLPA Entity List.
Watch Zinc
Duty rates, anti dumping cases and register listings change after you have checked them once. Sourzi is building a daily watch that emails you the day a row on this card changes.
Leave your email and you get one message when the watch is live for Zinc, and nothing else.
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