# Certain Corrosion-Resistant Steel Products From Mexico: Final Affirmative Determination of Sales at Less Than Fair Value
**AGENCY:**
Enforcement and Compliance, International Trade Administration, Department of Commerce.
**SUMMARY:**
The U.S. Department of Commerce (Commerce) determines that certain corrosion-resistant steel products (CORE) from Mexico are being, or are likely to be, sold in the United States at less than fair value (LTFV). The period of investigation (POI) is July 1, 2023, through June 30, 2024.
**DATES:**
Applicable August 29, 2025.
**FOR FURTHER INFORMATION CONTACT:**
Brian Smith or Katerina Katsiadas, AD/CVD Operations, Office VIII, Enforcement and Compliance, International Trade Administration, U.S. Department of Commerce, 1401 Constitution Avenue NW, Washington, DC 20230; telephone: (202) 482-1766 or (202) 482-4929, respectively.
**SUPPLEMENTARY INFORMATION:**
**Background**
On April 10, 2025, Commerce published in the *Federal Register* its preliminary affirmative determination in the LTFV investigation of CORE from Mexico, in which we also postponed the final determination to August 25, 2025, and invited interested parties to comment on the *Preliminary Determination.*[^1] On July 18, 2025, Commerce issued a post-preliminary analysis memorandum in which we made certain changes to our differential pricing analysis. [^2] We invited interested parties to comment on the Post-Preliminary Analysis. [^3]
[^1]*See Certain Corrosion-Resistant Steel Products From Mexico: Preliminary Affirmative Determination of Sales at Less Than Fair Value, Postponement of Final Determination, and Extension of Provisional Measures,* 90 FR 15349 (April 10, 2025) ( *Preliminary Determination* ), and accompanying Preliminary Decision Memorandum (PDM).
[^2]*See* Memorandum, “Post-Preliminary Analysis for the Affirmative Determination in the Less-Than-Fair-Value Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated July 18, 2025 (Post-Preliminary Analysis).
[^3]*See* Memorandum, “Briefing Schedule,” dated July 21, 2025.
A summary of the events that occurred since Commerce published the Preliminary Determination, as well as a full discussion of the issues raised by parties for this final determination, may be found in the Issues and Decision Memorandum. [^4] The Issues and Decision Memorandum is a public document and is on file electronically via Enforcement and Compliance's Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS). ACCESS is available to registered users at *https://access.trade.gov.* In addition, a complete version of the Issues and Decision Memorandum can be accessed directly at *https://access.trade.gov/public/FRNoticesListLayout.aspx.*
[^4]*See* Memorandum, “Issues and Decision Memorandum for the Final Affirmative Determination of Sales at Less Than Fair Value in the Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated concurrently with, and hereby adopted by, this notice (Issues and Decision Memorandum).
**Scope of the Investigation**
The product covered by this investigation is CORE from Mexico. For a full description of the scope of this investigation, *see* Appendix I.
**Scope Comments**
In the Preliminary Scope Memorandum, we set aside a period of time for parties to raise issues regarding product coverage ( *i.e.,* scope) in scope-specific case briefs or other written comments. [^5] We received scope case and rebuttal briefs from multiple interested parties. For a summary of the product coverage comments and rebuttal responses submitted to the record for this final determination, and accompanying discussion and analysis of all comments timely received, *see* the Final Scope Memorandum. [^6] In the Final Scope Memorandum, Commerce made no changes to the scope language as it appeared in the *Initiation Notice.*<sup>7</sup>*See* Appendix I.
[^5]*See* Memorandum, “Less-Than-Fair-Value Investigations of Certain Corrosion-Resistant Steel Products from Australia, Brazil, Canada, Mexico, the Netherlands, South Africa, Taiwan, the Republic of Türkiye, the United Arab Emirates, and the Socialist Republic of Vietnam, and Countervailing Duty Investigations of Certain Corrosion-Resistant Steel Products from Brazil, Canada, Mexico, and the Socialist Republic of Vietnam: Preliminary Scope Decision Memorandum,” dated April 3, 2025 (Preliminary Scope Memorandum).
[^6]*See* Memorandum, “Less-Than-Fair-Value Investigations of Certain Corrosion-Resistant Steel Products from Australia, Brazil, Canada, Mexico, the Netherlands, South Africa, Taiwan, the Republic of Türkiye, the United Arab Emirates, and the Socialist Republic of Vietnam, and Countervailing Duty Investigations of Certain Corrosion-Resistant Steel Products from Brazil, Canada, Mexico, and the Socialist Republic of Vietnam: Final Scope Decision Memorandum,” dated concurrently with this notice (Final Scope Memorandum).
[^7]*See Certain Corrosion-Resistant Steel Products from Brazil, Canada, Mexico, and the Socialist Republic of Vietnam: Initiation of Countervailing Duty Investigations,* 89 FR 80204 (October 2, 2024) ( *Initiation Notice* ).
**Verification**
As provided in section 782(i) of the Tariff Act of 1930, as amended (the Act), in April and May 2025, we conducted verification of the sales and cost information submitted by Ternium Mexico S.A. de C.V. (Ternium)/Tenigal, S.de R.L. de C.V. (Tenigal) (collectively, Ternium/Tenigal) and Galvasid S.A. de C.V. (Galvasid)/Perfiles LM, S.A. de C.V. (Perfiles) (collectively, Galvasid/Perfiles) for use in our final determination. [^8] We used standard verification procedures, including an examination of relevant sales and accounting records, and original source documents provided by Ternium/Tenigal and Galvasid/Perfiles.
[^8]*See* Memoranda, “U.S. Verification of the Sales Response of Ternium USA, Inc. in the Antidumping Duty Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated July 10, 2025; “Verification of the Sales Response of Ternium Mexico S.A. de C.V. in the Antidumping Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated July 18, 2025; “Verification of the Cost Response of Ternium Mexico, S.A. de C.V. in the Less-Than-Fair-Value Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated June 23, 2025; “Verification of the Sales Response of Galvasid S.A. de C.V. in the Antidumping Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated July 11, 2025; and “Less-Than-Fair-Value Investigation of Certain Corrosion-Resistant Steel Products from Mexico,” dated May 12, 2025.
**Analysis of Comments Received**
All issues raised in case and rebuttal briefs submitted by interested parties in this investigation are addressed in the Issues and Decision Memorandum. A list of the issues addressed in the Issues and Decision Memorandum is attached to this notice at Appendix II.
**Changes Since the Preliminary Determination**
Based on our analysis of the comments received and our findings at verification, we made certain changes to Galvasid/Perfiles' and Ternium/Tenigal's margin calculations. For a discussion of these changes, *see* the Issues and Decision Memorandum.
**All-Others Rate**
Section 735(c)(5)(A) of the Act provides that the estimated weighted-average dumping margin for all other producers and exporters not individually investigated shall be an amount equal to the weighted-average of the estimated weighted-average dumping margins established for exporters and producers individually investigated excluding rates that are zero, *de minimis,* or determined entirely under section 776 of the Act, *i.e.,* facts otherwise available. Therefore, we calculated the all-others rate based on a weighted average of the dumping margins calculated for the mandatory respondents using each company's publicly ranged values for the merchandise under consideration. [^9]
[^9] We followed our normal practice, which is, with two respondents, we calculate (A) a weighted-average of the dumping margins calculated for the mandatory respondents; (B) a simple average of the dumping margins calculated for the mandatory respondents; and (C) a weighted-average of the dumping margins calculated for the mandatory respondents using each company's publicly-ranged values for the merchandise under consideration. We then compare (B) and (C) to (A) and select the rate closest to (A) as the most appropriate rate for all other companies. See Ball Bearings and Parts Thereof From France, Germany, Italy, Japan, and the United Kingdom: Final Results of Antidumping Duty Administrative Reviews, Final Results of Changed-Circumstances Review, and Revocation of an Order in Part, 75 FR 53661, 53663 (September 1, 2010).
**Final Determination**
Commerce determines that the following estimated weighted-average dumping margins exist:
| Producer or exporter | Weighted-average | Cash deposit rate |
| --- | --- | --- |
| Galvasid S.A. de C.V./Perfiles LM, S.A. de C.V | 24.05 | 24.05 |
| Ternium Mexico S.A. de C.V./Tenigal, S.de R.L. de C.V | 14.17 | 1.07 |
| All Others | 17.40 | 4.30 |
**Disclosure**
[^10]*See* the unpublished companion CVD final determination, Certain Corrosion-Resistant Steel Products from Mexico: Final Affirmative Countervailing Duty Determination, dated concurrently with this memorandum.
[^11]*Id.*
Commerce intends to disclose the calculations performed in connection with this final determination to interested parties within five days of any public announcement or, if there is no public announcement, within five days of the publication of the notice in the *Federal Register* , in accordance with 19 CFR 351.224(b).
**Continuation of Suspension of Liquidation**
In accordance with section 735(c)(1)(B) of the Act, Commerce will instruct U.S. Customs and Border Protection (CBP) to continue to suspend liquidation of all appropriate entries of subject merchandise, as described in Appendix I of this notice, which were entered, or withdrawn from warehouse, for consumption on or after April 10, 2025, the date of publication of the *Preliminary Determination* in the *Federal Register* .
Pursuant to section 735(c)(1)(B)(ii) of the Act and 19 CFR 351.210(d), where appropriate, Commerce will instruct CBP to require a cash deposit equal to the estimated weighted-average dumping margin or the estimated all-others rate, as follows: (1) the cash deposit rate for the respondents listed above will be equal to the company-specific estimated weighted-average dumping margin determined in this final determination; (2) if the exporter is not a company identified above but the producer is, then the cash deposit rate will be equal to the company-specific estimated weighted-average dumping margin established for that producer of the subject merchandise; and (3) the cash deposit rate for all other producers and exporters will be equal to the all-others estimated weighted-average dumping margin. These suspension of liquidation instructions will remain in effect until further notice.
To determine the cash deposit rate, Commerce normally adjusts the estimated weighted-average dumping margin by the amount of export subsidies countervailed in a companion CVD proceeding, when CVD provisional measures are in effect. Accordingly, where Commerce has made a final affirmative determination for countervailable export subsidies, Commerce offsets the estimated weighted-average dumping margin by the appropriate CVD rate. Commerce would adjust the cash deposit rate for export subsidies in the companion CVD investigation by the appropriate export subsidy rate; however, suspension of liquidation of provisional measures in the companion CVD proceeding has been discontinued. [^12] Therefore, we are not instructing CBP to collect cash deposits based upon the adjusted estimated weighted-average dumping margin for those export subsidies at this time. If the U.S. International Trade Commission (ITC) makes a final affirmative determination of injury due to both dumping and subsidies, then the cash deposit rate will be revised effective on the date of the publication of the ITC's final affirmative determination in the *Federal Register* to be the company-specific estimated weighted-average dumping margin adjusted for export subsidies.
[^12]*See* section 703(d) of the Act, which states that the provisional measures may not be in effect for more than four months, which in the companion CVD case is 120 days after the publication of the preliminary determination, or June 9, 2025 ( *i.e.,* the last day provisional measures are in effect).
**U.S. International Trade Commission (ITC) Notification**
In accordance with section 735(d) of the Act, Commerce will notify the ITC of the final affirmative determination of sales at LTFV. Because Commerce's final determination is affirmative, in accordance with section 735(b)(2) of the Act, the ITC will make its final determination as to whether the domestic industry in the United States is materially injured, or threatened with material injury, by reason of imports or sales (or the likelihood of sales) by reason of importation of CORE from Mexico, no later than 45 days after this final determination. If the ITC determines that such injury does not exist, this proceeding will be terminated, and all cash deposits posted will be refunded and suspension of liquidation will be lifted. If the ITC determines that such injury does exist, Commerce will issue an antidumping duty order directing CBP to assess, upon further instruction by Commerce, antidumping duties on all imports of the subject merchandise entered, or withdrawn from warehouse, for consumption on or after the effective date of the suspension of liquidation, as discussed above in the “Continuation of Suspension of Liquidation” section. In addition, we are making available to the ITC all non-privileged and non-proprietary information in our files, provided the ITC confirms that it will not disclose such information, either publicly or under administrative protective order (APO), without the written consent of the Assistant Secretary for Enforcement and Compliance.
**Administrative Protective Order (APO)**
This notice will serve as a final reminder to parties subject to an APO of their responsibility concerning the disposition of proprietary information disclosed under APO in accordance with 19 CFR 351.305(a)(3). Timely written notification of return or destruction of APO materials or conversion to judicial protective order is hereby requested. Failure to comply with the regulations and the terms of an APO is a sanctionable violation.
**Notification to Interested Parties**
This determination is issued and published in accordance with sections 735(d) and 777(i)(1) of the Act, and 19 CFR 351.210(c).
Dated: August 25, 2025.
Abdelali Elouaradia,
Deputy Assistant Secretary for Enforcement and Compliance.
**Appendix I**
**Scope of the Investigation**
The products covered by this investigation are certain flat-rolled steel products, either clad, plated, or coated with corrosion-resistant metals such as zinc, aluminum, or zinc-, aluminum-, nickel- or iron-based alloys, whether or not corrugated or painted, varnished, laminated, or coated with plastics or other non-metallic substances in addition to the metallic coating. The products covered include coils that have a width of 12.7 mm or greater, regardless of form of coil ( *e.g.,* in successively superimposed layers, spirally oscillating, etc.). The products covered also include products not in coils ( *e.g.,* in straight lengths) of a thickness less than 4.75 mm and a width that is 12.7 mm or greater and that measures at least 10 times the thickness. The products covered also include products not in coils ( *e.g.,* in straight lengths) of a thickness of 4.75 mm or more and a width exceeding 150 mm and measuring at least twice the thickness. The products described above may be rectangular, square, circular, or other shape and include products of either rectangular or non-rectangular cross-section where such cross-section is achieved subsequent to the rolling process, *i.e.,* products which have been “worked after rolling” ( *e.g.,* products which have been beveled or rounded at the edges).
For purposes of the width and thickness requirements referenced above:
(1) Where the nominal and actual measurements vary, a product is within the scope if application of either the nominal or actual measurement would place it within the scope based on the definitions set forth above, and
(2) where the width and thickness vary for a specific product ( *e.g.,* the thickness of certain products with non-rectangular cross-section, the width of certain products with non-rectangular shape, etc.), the measurement at its greatest width or thickness applies.
Steel products included in the scope of this investigation are products in which: (1) iron predominates, by weight, over each of the other contained elements; and (2) the carbon content is 2 percent or less, by weight.
Subject merchandise also includes corrosion-resistant steel that has been further processed in a third country, including but not limited to annealing, tempering, painting, varnishing, trimming, cutting, punching and/or slitting or any other processing that would not otherwise remove the merchandise from the scope of the investigation if performed in the country of manufacture of the in-scope corrosion resistant steel.
All products that meet the written physical description are within the scope of this investigation unless specifically excluded. The following products are outside of and/or specifically excluded from the scope of this investigation:
• Flat-rolled steel products either plated or coated with tin, lead, chromium, chromium oxides, both tin and lead (“terne plate”) or both chromium and chromium oxides (“tin free steel”), whether or not painted, varnished or coated with plastics or other nonmetallic substances in addition to the metallic coating;
• Clad products in straight lengths of 4.7625 mm or more in composite thickness and of a width which exceeds 150 mm and measures at least twice the thickness;
• Certain clad stainless flat-rolled products, which are three-layered corrosion-resistant carbon steel flat-rolled products less than 4.75 mm in composite thickness that consist of a carbon steel flat-rolled product clad on both sides with stainless steel in a 20%-60%-20% ratio.
The products subject to this investigation are currently classified in the Harmonized Tariff Schedule of the United States (HTSUS) under item numbers: 7210.30.0030, 7210.30.0060, 7210.41.0000, 7210.49.0030, 7210.49.0040, 7210.49.0045, 7210.49.0091, 7210.49.0095, 7210.61.0000, 7210.69.0000, 7210.70.6030, 7210.70.6060, 7210.70.6090, 7210.90.6000, 7210.90.9000, 7212.20.0000, 7212.30.1030, 7212.30.1090, 7212.30.3000, 7212.30.5000, 7212.40.1000, 7212.40.5000, 7212.50.0000, 7212.60.0000, 7225.91.0000, 7225.92.0000, 7226.99.0110, and 7226.99.0130.
The products subject to this investigation may also enter under the following HTSUS item numbers: 7210.90.1000, 7215.90.1000, 7215.90.3000, 7215.90.5000, 7217.20.1500, 7217.30.1530, 7217.30.1560, 7217.90.1000, 7217.90.5030, 7217.90.5060, 7217.90.5090, 7225.99.0090, 7226.99.0180, 7228.60.6000, 7228.60.8000, and 7229.90.1000.
The HTSUS subheadings above are provided for convenience and customs purposes only. The written description of the scope of this investigation is dispositive.
**Appendix II**
**List of Topics Discussed in the Issues and Decision Memorandum**
I. Summary
II. Background
III. Changes Since the *Preliminary Determination*
IV. Application of Facts Available and Use of Adverse Inferences
V. Discussion of the Issues
Comment 1: Use of Zeroing
Comment 2: Flaws in Applying the New Differential Price Test
Comment 3: Use of Average-to-Average Method
Comment 4: Use of Facts Otherwise Available With An Adverse Inference
Comment 5: Multiple Costs Reported for the Same Control Number
Comment 6: Adjusting Cost of Manufacture for Unreconciled or Unexplained Differences
Comment 7: Adjusting Affiliated Purchase Prices to Reflect Actual Market Prices
Comment 8: Treatment of Certain Excluded Expenses
Comment 9: U.S. Warehousing Expenses, Home Market and U.S. Freight Expenses, and Home Market Credit Expenses (Calculated Using Average Payment Dates)
Comment 10: Cash Deposit Instructions
Comment 11: U.S. and Home Market Royalty Expenses and U.S. Insurance Expenses
Comment 12: U.S. Freight and Insurance Revenue
Comment 13: U.S. Warranty Expenses
VI. Recommendation