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HTS heading 2510: Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk

Heading 2510 of the US Harmonized Tariff Schedule covers Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.

Official USITC HTS, 2026HTSRev22 · check on hts.usitc.gov

Heading 2510 at a glance

Goods named in this heading (official line texts): Unground, Ground.

Subheadings (6-digit)

All tariff lines in heading 2510

LineDescriptionGeneralSection 301 (China)Exclusions
2510.10.00Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic c…: UngroundFreeList 3 +25%
2510.20.00Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic c…: GroundFreeList 3 +25%

All of chapter 25 · Chapter 25 rate summary · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.

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