Tandom
About
Sign inCreate a free account →
Tandom

The building blocks of global trade.

hello@tandom.ai

Proud to partner with

Microsoft for Startups

NVIDIA

Inception Program

Products

  • Tariff Calculator
  • AD/CVD Intelligence
  • HTS Classification
  • Document Intelligence
  • Entry Filing
  • Excel Plugin
  • Email Plugin

Catalogs

  • AD/CVD Catalog
  • HTS Catalog
  • Pending Investigations Directory
  • Rate Change Feed

Developers

  • API
  • AI Agent Workflows
  • MCP Connector
  • API Reference
  • API Pricing
  • API Changelog

Resources

  • Resource Center
  • Guides
  • Roadmap

Company & Legal

  • About
  • Privacy Policy
  • Terms of Service
  • Acceptable Use

© 2026 Fintora Technologies, Inc. d/b/a Tandom. All rights reserved.

Plain-English explanationMessage bodyFrequently asked questionsLearn more
  1. AD/CVD Catalog
  2. ›
  3. CSMS
  4. ›
  5. CSMS 48857844
CSMS 48857844·Trade policy·July 22, 2021·View on csms.cbp.gov ↗

Initiation of Antidumping Duty Investigations: Acrylonitrile

Plain-English explanation

CSMS 48857844 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin (trade policy), published on July 22, 2021. It carries the official CBP guidance brokers and importers must follow for the topic — "Initiation of Antidumping Duty Investigations: Acrylonitrile". 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.

Message body

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

CSMS #48857844 - Initiation of Antidumping Duty Investigations: Acrylonitrile-Butadiene Rubber from France, the Republic of Korea, and Mexico U.S. Customs and Border Protection sent this bulletin at 07/22/2021 12:30 PM EDT   Cargo Systems Messaging Service CSMS #48857844 - Initiation of Antidumping Duty Investigations: Acrylonitrile-Butadiene Rubber from France, the Republic of Korea, and Mexico On July 20, 2021, the Department of Commerce (Commerce) initiated its less-than-fair-value  duty investigations on “Acrylonitrile-Butadiene Rubber from France, the Republic of Korea, and Mexico” (Initiation Notices).  These investigations have been assigned the following case numbers: A-427-832 (France) A-580-912 (Korea) A-201-855 (Mexico). The Scope of Merchandise covered by these investigations reads as follows: The product covered by these investigations is commonly referred to as acrylonitrile butadiene rubber or nitrile rubber (AB Rubber).  AB Rubber is a synthetic rubber produced by the emulsion polymerization of butadiene and acrylonitrile with or without the incorporation of a third component selected from methacrylic acid or isoprene.  This scope covers AB Rubber in solid or non-aqueous liquid form.  The scope also includes carboxylated AB Rubber. Excluded from the scope of these investigations is AB Rubber in latex form (commonly classified under Harmonized Tariff Schedule of the United States (HTSUS) subheading 4002.51.0000).  Latex AB Rubber is commonly either (a) acrylonitrile/butadiene polymer in latex form or (b) acrylonitrile/butadiene/methacrylic acid polymer in latex form.  The broader definition of latex refers to a water emulsion of a synthetic rubber obtained by polymerization. Also excluded from the scope of these investigations is:  (a) AB Rubber containing additives (e.g., nitrile rubber further compounded with fillers, reinforcement agents, vulcanization agents, etc.; by example, products classified under HTSUS subheading 4005); (b) AB Rubber containing rubber processing chemicals, AB Rubber containing other materials used for further processing beyond the polymerization process; (c) hydrogenated AB Rubber (commonly referred to as HNBR) produced by subsequent dissolution and hydrogenation of AB Rubber; (d) reactive liquid polymers containing acrylonitrile and butadiene with amine, epoxy, carboxyl, or methacrylate vinyl chemical functionality. Subject merchandise includes material matching the above description that has been finished, packaged, or otherwise processed in a third country, including by modifying physical form or packaging with another product, or performing any other finishing, packaging, or processing that would not otherwise remove the merchandise from the scope of the investigations if performed in the country of manufacture of the AB Rubber. The merchandise subject to these investigations is classified in the HTSUS at subheading 4002.59.0000.  While the HTSUS subheading numbers are provided for convenience and customs purposes, the written description of the merchandise under investigation is dispositive. Requirements For Submitting Comments On The Scope Of The Investigations:  Please be sure to comply with all three requirements established below. Deadline for Submitting Comments: As announced in the Initiation Notices, Commerce is setting aside a period for interested parties to raise issues regarding product coverage (scope).  The period for scope comments is intended to provide Commerce with ample opportunity to consider all comments and to consult with parties prior to the issuance of the preliminary determinations, as appropriate.  If scope comments include factual information (see 19 CFR 351.102(b)(21)), all such factual information should be limited to public information.  Commerce requests that all such comments be filed by 5:00 p.m. Eastern Time (ET) on August 9, 2021, which is 20 calendar days from the signature date of this notice.  Any rebuttal comments, which may include factual information, must be filed by 5:00 p.m. ET on August 19, 2021, which is 10 calendar days after the initial comments deadline.  Commerce requests that any factual information the parties consider relevant to the scope of the investigations be submitted during this time period.  However, if a party subsequently finds that additional factual information pertaining to the scope of the investigations may be relevant, the party may contact Commerce and request permission to submit the additional information.  All such comments must be filed on the records of each of the concurrent AD investigations identified above. Required Entry of Appearance: Parties wishing to participate in this segment and be included on the public service list must file a letter of appearance.  Section 351.103(d)(1) of Commerce’s regulations states that “with the exception of a petitioner filing a petition in an investigation, to be included on the public service list for a particular segment, each interested party must file a letter of appearance.” The letter of appearance must be filed separately from any other document (with the exception of an application for APO access).  Note, the letter of appearance must state how the party qualifies as an interested party (e.g., an exporter, producer, importer of the subject merchandise) and must include a point of contact, including address, telephone/fax number and email address. All submissions to Commerce must be filed electronically using Enforcement and Compliance’s Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS).  An electronically-filed document must be received successfully in its entirety by the time, typically 5 p.m., and date when it is due.  Note that Commerce has temporarily modified certain of its requirements for serving documents containing business proprietary information until further notice.[ See Temporary Rule Modifying AD/CVD Service Requirements Due to COVID-19; Extension of Effective Period, 85 FR 41363 (July 10, 2020) ] For your convenience, Commerce has the following resources available online to assist you in complying with these electronic filing procedures: ACCESS:  Help Link  https://access.trade.gov/help.aspx ACCESS:  External User Guide https://access.trade.gov/help/ACCESS_User_Guide.pdf ACCESS:  Handbook on Electronic Filing Procedures https://access.trade.gov/help/Handbook_on_Electronic_Filing_Procedures.pdf Federal Register notice:  Antidumping and Countervailing Duty Proceedings:  Electronic Filing Procedures; Administrative Protective Order Procedures, 76 FR 39263 (July 6, 2011) http://www.gpo.gov/fdsys/pkg/FR-2011-07-06/pdf/2011-16352.pdf Enforcement and Compliance:  Change of Electronic Filing System Name, 79 FR 69046 (November 20, 2014) http://www.gpo.gov/fdsys/pkg/FR-2014-11-20/pdf/2014-27530.pdf Enforcement and Compliance:  General Filing Requirements http://enforcement.trade.gov/filing/index.html Required Certifications Please note that certification requirements are in effect for company / government officials as well as their representatives.  In all segments of antidumping duty or countervailing duty proceedings, parties submitting factual information must adhere to 19 CFR 351.303(g) regarding the requirement to certify submissions of factual information. Understanding Critical Circumstances for Antidumping and Countervailing Duties Critical circumstances is a provision in both the antidumping and countervailing Duty (AD/CVD) laws that allows for the limited retroactive imposition of duties if certain conditions are met.  Importers should be aware that entries of subject merchandise made after the initiation of an AD/CVD investigation may retroactively be subject to AD/CVD.    A finding of critical circumstances is an important tool for Commerce and the U.S. International Trade Commission (ITC) to offset possible import surges during the early period of an AD/CVD investigation.  The petitioner in an AD/CVD investigation may allege critical circumstances during an investigation up to 21 days before the date of Commerce’s final determination.  If Commerce makes a determination that critical circumstances exist, it has the statutory authority to order the retroactive suspension of liquidation and posting of a cash deposit for entries made before the issuance of a Preliminary and/or Final AD/CVD determination.  Commerce’s authority to suspend entries retroactively for AD/CVD is limited to those entries made on or after the later of: (1) 90 days before the effective date the suspension of liquidation was first ordered, or (2) the date on which the determination to initiate the investigation is published in the Federal Register.  In either case, AD/CVD cash deposits are due on entries subject to critical circumstances determinations. If, following a preliminary determination by Commerce that critical circumstances exist, both Commerce and the ITC reach a final affirmative determination of dumping or subsidization, but either agency makes a negative final determination of critical circumstances, Commerce will instruct U.S. Customs and Border Protection (CBP) to lift suspension from the entries made during the 90-day critical circumstances period and refund cash deposits made with respect to those entries.  Interest is not payable on refunds of cash deposits at this stage in the AD/CVD case.  For Further Information Contact: AD/CVD Operations, Enforcement and Compliance, U.S. Department of Commerce, 1401 Constitution Avenue NW, Washington, DC 20230:  Patrick Barton at (202) 482-0012 (Antidumping Duty Investigation from France); Andre Gziryan at (202) 482-2201 (Antidumping Duty Investigation from the Republic of Korea); Dennis McClure at (202) 482-5973 (Antidumping Duty Investigations from Mexico). Determinations related to these proceedings, issued by Commerce and the ITC, will be published in the Federal Register.  Parties may also view Commerce’s public AD/CVD instructions to CBP in ACE and “ADD CVD Search” at https://aceservices.cbp.dhs.gov/adcvdweb.   Update your subscriptions, modify your password or e-mail address, or stop subscriptions at any time on your Subscriber Preferences Page . You will need to use your e-mail address to log in. If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com . This service is provided to you at no charge by U.S. Customs and Border Protection . Privacy Policy | GovDelivery is providing this information on behalf of U.S. Department of Homeland Security, and may not use the information for any other purposes. Powered by Privacy Policy | Cookie Statement | Help

Frequently asked questions

What is CSMS 48857844?

CSMS 48857844 is a U.S. Customs and Border Protection (CBP) Cargo Systems Messaging Service bulletin titled "Initiation of Antidumping Duty Investigations: Acrylonitrile". 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 48857844 published?

CBP published CSMS 48857844 on July 22, 2021. The bulletin's instructions are typically operative as of the publication date unless the body specifies a different effective date.

Is the CBP CSMS the legally binding instruction?

Yes — for at-the-border filing and entry collection. CSMS messages translate Commerce's Federal Register determinations into operational CBP instructions that ACE/ACS systems and brokers execute. The Federal Register notice is the underlying legal authority; the CSMS is the operational implementation. Both should be read together when reconciling a rate or scope change.

Learn more

Tandom guides relevant to CBP CSMS messages

Subscribe to and triage CBP CSMS messages

How to subscribe to CBP Cargo Systems Messaging Service and triage the messages that change broker filing behavior, without losing the ones that matter.

Open resource →

Real-time alerts when a CSMS message changes a duty rate

Set up alerts when a CBP CSMS message changes a duty rate on an HTS code you depend on. Built for brokers, forwarders, and importer compliance teams.

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.

Open resource →

Determine if a product is in scope of an AD/CVD order

Scope text is authoritative; the HTS list is illustrative. Read scope, find past rulings, and file a 19 CFR 351.225 inquiry. Worked example on case A-570-106 (wooden cabinets from China).

Open resource →

Bulk-classify SKU descriptions with the Tandom HTS Classifier API

Run thousands of product descriptions through HTS classification, score the confidence, and triage borderline rows. Public search endpoint plus the closed-beta three-layer Classifier.

Open resource →

Check AD/CVD exposure by HTS code

A practical workflow for checking antidumping and countervailing duty exposure on a US entry. For brokers and ops teams who need the answer before filing.

Open resource →