AD+CVD ORDERS China A-570-122 (AD)C-570-123 (CVD)

U.S. Antidumping and Countervailing Duties on Certain Corrosion Inhibitors from China (A-570-122 / C-570-123)

This is an educational summary — NOT a scope determination or filing advice. It does not decide whether your specific goods are covered. Always verify against the latest U.S. Commerce and CBP instructions.

Certain corrosion inhibitors from China may be subject to both a U.S. antidumping order (A-570-122) and a countervailing duty order (C-570-123).

Case snapshot

Product	Certain Corrosion Inhibitors
Country	China
Case type	AD+CVD
Case number(s)	A-570-122 (AD) · C-570-123 (CVD)
Status	Active / continued
Scope control	Commerce written scope language
HTS role	Reference / screening only
Rate note	Varies by exporter/producer and administrative review

Key dates

A-570-122 (AD)	Federal Register: 2026-03 FR notice 2026-04059 (Opportunity to Request Review)
C-570-123 (CVD)	Federal Register: 2026-03 FR notice 2026-04059 (Opportunity to Request Review)
Status as of	Active — 2026-07-03
Expiration	No fixed expiration date. AD/CVD orders remain in place subject to five-year sunset reviews, and stay active unless revoked after Commerce/ITC review or other Commerce action.
Last checked by ETDETA	2026-07-03

Effective/entry-specific deposit and liquidation treatment depends on Commerce and CBP instructions, not only the publication date.

This educational explainer covers certain corrosion inhibitors from China, which may fall within the scope of two U.S. Department of Commerce orders: antidumping case A-570-122 and countervailing duty case C-570-123. Because both an AD and a CVD order exist, imported goods that match the written scope may face two separate cash-deposit requirements at entry.

Scope — simplified screening examples, not full legal scope

The official written scope controls. The examples below are screening references only.

Products that may be covered (examples)

•Corrosion inhibitor chemicals such as certain triazole-based compounds that may fall within scope
•Benzotriazole-type corrosion inhibitors that may be covered
•Tolyltriazole-type corrosion inhibitors that may be covered
•Corrosion inhibitor products sold as powders, granules, or flakes that may be covered
•Aqueous solutions or blends containing subject inhibitor chemistry, depending on scope
•Corrosion inhibitors imported for use in coolants, antifreeze, or metalworking fluids that may be covered
•Repackaged or relabeled subject inhibitor material that may still be covered

Products that may require separate review or may fall outside this order

?Finished consumer products where the inhibitor is only a minor component, depending on scope
?Other classes of industrial chemicals unrelated to the described inhibitor chemistry
?Corrosion inhibitors of a chemistry not described in Commerce's written scope
?Fully formulated end-use products that fall outside the scope language
?Non-subject additives or surfactants that are not the described inhibitor compound

Scope control: HTS codes are screening references only; Commerce's written scope language controls whether a product is covered, and blends, solutions, unfinished, or repackaged forms may still be covered depending on that scope.

Who it affects

This typically matters for importers of corrosion inhibitor chemicals and inhibitor-containing blends of Chinese origin, including buyers sourcing for antifreeze, coolant, water treatment, or metalworking applications.

What the duty means

Cash deposits are collected at entry; AD and CVD rates vary by exporter/producer and by administrative review and can be very high. Because both an AD order (A-570-122) and a CVD order (C-570-123) exist, both types of deposits may apply. A 0% deposit rate is NOT an exemption — the order still applies and entries must be declared.

Importer checklist — how to assess your risk

☐Gather the commercial invoice with the precise product description and chemical name.
☐Collect product photos, technical data sheets, and specification documents.
☐Document the exact material composition and CAS/chemical identity of the inhibitor.
☐Confirm the intended use and end application of the product.
☐Obtain country-of-origin support and manufacturing records.
☐Identify both the manufacturer/producer and the exporter, and confirm the specific producer/exporter combination.
☐Determine the tentative HTS classification for screening purposes only.
☐Consult a licensed customs broker or trade attorney to confirm scope; do not rely only on supplier statements.
☐Verify the applicable cash-deposit rate against current Commerce results and CBP AD/CVD messages before filing.

Risks to watch

⚠Circumvention or transshipment findings if goods are routed through third countries to disguise Chinese origin.
⚠Scope inquiries where Commerce may determine borderline products are covered.
⚠Using the wrong exporter/producer combination and applying an incorrect deposit rate.
⚠Misdeclaration or omission of AD/CVD status, which can trigger penalties and retroactive duties.

The same product may be subject to trade-remedy orders from multiple countries, so importers should review each origin separately rather than assuming a switch of source avoids duties.

FAQ

Is there antidumping duty on corrosion inhibitors from China?

There is a U.S. antidumping order on certain corrosion inhibitors from China under case A-570-122, and separately a countervailing duty order under C-570-123. Whether a specific product is covered depends on Commerce's written scope, so importers should verify.

Does a 0% deposit rate mean no duty?

No. A 0% cash-deposit rate is not an exemption. The order still applies, the entry must be declared as subject merchandise, and rates can change through administrative reviews.

Are parts or unassembled corrosion inhibitors covered?

Inhibitor material in various forms — including solutions, blends, or repackaged product — may still be covered depending on Commerce's written scope; importers should confirm before filing.

Possible risk

Risk signal: Higher concern if the goods are corrosion inhibitor chemicals of Chinese origin; separate review is needed for blends, formulations, repackaged goods, and third-country processing. This does not state the goods are covered.

Bottom line: Certain corrosion inhibitors from China may be covered by A-570-122 (AD) and C-570-123 (CVD); confirm scope, origin, exporter/producer identity, and current deposit rates before entry.

Not a scope determination or filing advice — confirm coverage and current deposit rates with a licensed customs broker and the latest Commerce/CBP instructions before entry.

Official sources

These links are for source verification. Confirm the latest applicable rate and instructions with Commerce/CBP before entry.

· Federal Register notice (2026-03 FR notice 2026-04059 (Opportunity to Request Review))
· Commerce ACCESS — AD/CVD proceedings & scope rulings
· CBP ACE AD/CVD case search & messages
· USITC sunset/injury reviews
HTS codes are provided for reference/screening only.

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Educational summary of a public U.S. Department of Commerce AD/CVD order — not legal advice, a customs broker opinion, or a scope determination. Whether specific goods fall within an order's scope must be confirmed with a licensed customs broker and the latest Commerce/CBP notices.

Last updated: 2026-07-06