CSMS 5274420·Trade policy·October 1, 2025·View on csms.cbp.gov ↗

Notice of affirmative preliminary CVD determination, and alignment of the final CVD determination with the AD investigation of Silicon Metal from Australia (C-602-814)

Plain-English explanation

CSMS 5274420 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on October 1, 2025. It carries the official CBP guidance brokers and importers must follow for the topic — "Notice of affirmative preliminary CVD determination, and alignment of the final CVD determination with the AD investigation of Silicon Metal from Australia (C-602-814)". It links to 1 AD/CVD case in Tandom's catalog. CSMS messages are the operational layer between Commerce determinations and at-the-border collections: when Commerce publishes a new rate, scope ruling, or instruction, CBP turns it into a CSMS that ACE/ACS systems and brokers act on.

Linked AD/CVD cases(1)

Cases referenced or affected by this CSMS message

C-602-814

Message body

Full text as published by U.S. Customs and Border Protection

1. On 09/26/2025, Commerce published in the Federal Register its affirmative preliminary determination in the countervailing duty (CVD) investigation of silicon metal from Australia (subject merchandise) (90 FR 46390). Additionally, Commerce has aligned the deadline for the final determination in the CVD investigation with the deadline for the final determination in the companion antidumping duty investigation of the same merchandise, currently scheduled to be issued no later than 02/03/2026. 2. The merchandise covered by this investigation is described in message 5147402, dated 05/27/2025. 3. This proceeding has been assigned case number C-602-814. 4. Cash Deposits for the companies identified below. CBP shall suspend liquidation of subject merchandise entered, or withdrawn from warehouse, for consumption on or after 09/26/2025 (the date of publication of the preliminary determination), and shall require, for such entries, a cash deposit equal to the percentages of entered value for the producers and/or exporters listed below. Producer and/or Exporter: Simcoa Operations Pty, Ltd.; Silicon Metal Company of Australia Pty Ltd.; Simcoa Mines Pty Ltd.; Microsilica Pty Ltd. Case Number: C-602-814-001 Cash Deposit: 41.31 % Producer and/or Exporter: All Others Case Number: C-602-814-000 Cash Deposit Rate: 41.31 % 5. If a producer/exporter combination cash deposit rate does not exist for the producer/exporter of the subject merchandise, then the following instructions apply: A. If both the producer and the exporter of the subject merchandise have their own cash deposit rates, and their rates differ, the applicable cash deposit rate will be the higher of these two rates. B. If the producer of the subject merchandise has its own rate, but the exporter does not have its own rate, the cash deposit rate will be the producer's rate. C. If the exporter of the subject merchandise has its own rate, but the producer does not have its own rate, the cash deposit rate will be the exporter's rate. D. Where neither the exporter nor the producer has its own rate, the cash deposit rate will be the All Others rate. 6. If there are any questions by the public regarding this message, please contact the Call Center for the Office of AD/CVD Operations, Enforcement and Compliance, International Trade Administration, U.S. Department of Commerce, at (202) 482-0984. CBP ports should submit their inquiries through authorized CBP channels only. (This message was generated by OIII: KAC) 7. There are no restrictions on the release of this information. Alexander Amdur

Frequently asked questions

What is CSMS 5274420?

CSMS 5274420 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Notice of affirmative preliminary CVD determination, and alignment of the final CVD determination with the AD investigation of Silicon Metal from Australia (C-602-814)". CSMS bulletins are the operational instructions CBP issues to brokers, importers, and ACE filers covering rate changes, system updates, scope guidance, and other day-to-day customs-operations changes.

When was CSMS 5274420 published?

CBP published CSMS 5274420 on October 1, 2025. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Which AD/CVD cases does CSMS 5274420 affect?

CSMS 5274420 references 1 AD/CVD case (C-602-814). The links on this page take you to each linked order with its current scope, rates, and history.

Is the CBP CSMS the legally binding instruction?

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Open resource

Find the right manufacturer or exporter rate in an AD/CVD order

Cash deposit cascade, separate rates, all-others, and PRC-wide rates. Worked example on case A-570-910 (galvanized welded steel pipe from China) with three exporter-specific rates.