AD ORDER China A-570-919 (AD)

U.S. Antidumping Duty on Electrolytic Manganese Dioxide from China (A-570-919)

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.

Electrolytic Manganese Dioxide (EMD) from China may be affected by a U.S. antidumping (AD) duty order under case number A-570-919.

Case snapshot

Product	Electrolytic Manganese Dioxide
Country	China
Case type	AD
Case number(s)	A-570-919 (AD)
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-570-919 (AD)	Federal Register: 2025-10 FR notice 2025-19188 (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 explainer covers the U.S. antidumping (AD) duty order on Electrolytic Manganese Dioxide (EMD) from China under case number A-570-919. Only an AD order is referenced here; no separate countervailing (CVD) case is provided. Importers of EMD from China should review whether their goods may fall within the written scope.

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)

•Manganese dioxide (MnO2) that may be produced through an electrolysis process
•Electrolytic manganese dioxide in powder form
•Electrolytic manganese dioxide in chip form
•Electrolytic manganese dioxide in plate form
•EMD intended for use in battery manufacturing
•EMD of Chinese origin regardless of grade, where produced by electrolysis

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

?Natural manganese dioxide (NMD), which is commonly outside this order
?Chemical manganese dioxide (CMD), which is commonly outside this order
?Manganese dioxide not manufactured through an electrolysis process
?Other manganese compounds that are not manganese dioxide produced by electrolysis

Scope control: The HTSUS subheading (provided in the order for convenience) is a screening reference only; Commerce's written scope language is dispositive, and related or intermediate forms may still be covered depending on that scope.

Who it affects

This typically matters for importers, distributors, and battery or chemical manufacturers sourcing electrolytic manganese dioxide (EMD) of Chinese origin in powder, chip, or plate form.

What the duty means

If merchandise falls within scope, CBP typically requires a cash deposit of estimated antidumping duties at entry. Rates vary by exporter/producer and administrative review and can be high; a 0% cash-deposit rate is NOT an exemption — the order still applies and entries must be declared. Only an AD order is referenced here.

Importer checklist — how to assess your risk

☐Gather the commercial invoice with a precise product description of the manganese dioxide.
☐Obtain product photos, spec sheets, and technical data showing the production method (electrolysis vs. natural or chemical).
☐Document the material composition and confirm whether the product is MnO2 produced by electrolysis.
☐Identify the intended use (e.g., battery-grade) to support scope review.
☐Collect country-of-origin support to confirm Chinese origin.
☐Record the full manufacturer and exporter names and verify the specific producer/exporter combination.
☐Confirm the HTS classification for screening purposes only, not as proof of scope.
☐Consult a licensed customs broker or qualified trade counsel to confirm scope; do not rely only on supplier statements.
☐Verify the applicable cash-deposit rate against current Commerce administrative-review results and current CBP AD/CVD messages before filing.

Risks to watch

⚠Circumvention or transshipment findings for EMD routed through third countries.
⚠Scope inquiries where product form or production method is unclear.
⚠Applying the wrong exporter/producer combination and thus an incorrect cash-deposit rate.
⚠Misdeclaration or misclassification exposing the importer to penalties and retroactive duties.

The same product may be subject to trade-remedy orders from other origins as well, so importers should review each country of origin independently rather than assuming any single source is unaffected.

FAQ

Is there antidumping duty on Electrolytic Manganese Dioxide from China?

There is a U.S. antidumping (AD) duty order on Electrolytic Manganese Dioxide from China under case number A-570-919. Whether a specific shipment is covered depends on Commerce's written scope, so importers should verify before entry.

Does a 0% deposit rate mean no duty?

No. A 0% cash-deposit rate is not an exemption. The order under A-570-919 still applies, entries must be declared, and liability may change with administrative reviews.

Are natural or chemical manganese dioxide covered?

The written scope generally excludes natural manganese dioxide (NMD) and chemical manganese dioxide (CMD); only manganese dioxide made by electrolysis is described as covered. Importers should confirm the production method and verify scope with Commerce's written language.

Possible risk

Risk signal: Higher concern if the goods are electrolytic manganese dioxide of Chinese origin in powder, chip, or plate form; separate review is needed for natural or chemical manganese dioxide, blends, repackaged goods, and third-country processing.

Bottom line: Electrolytic Manganese Dioxide from China may be covered by AD case A-570-919; confirm scope, production method, 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 (2025-10 FR notice 2025-19188 (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: 2026-07-13