Preliminary Affirmative Determinations in the Antidumping Duty Investigations of Certain Chassis and Subassemblies Thereof from Mexico, Thailand, and the Socialist Republic of Vietnam
Preliminary Affirmative Determinations in the Antidumping Duty Investigations of Chassis from Mexico and Thailand
On September 25, 2025, the U.S. Department of Commerce (Commerce) announced its preliminary affirmative determinations in the antidumping duty (AD) investigations of certain chassis and subassemblies thereof (chassis) from Mexico, Thailand, and the Socialist Republic of Vietnam (Vietnam). There are also concurrent countervailing duty investigations on chassis from Mexico and Thailand.
Preliminary Dumping Rates
Mexico
| Exporter/Producer | Dumping Margin (Percent) | Cash Deposit Rate (Adjusted for Subsidy Offset(s)) (Percent) |
|---|---|---|
| Hyundai de Mexico S.A. de C.V. | 32.37* | 0.00 |
| BRD Trailers, S.A. de C.V. | 32.37* | 0.00 |
| Carrocerias Gallegos S.A. de C.V. | 32.37* | 0.00 |
| Commercializadora Nimmka S.A. de C.V. (d/b/a Atro Remolques y Carroceria) | 32.37* | 0.00 |
| Carrocerias Corpus Christi S.A. DE C.V. | 32.37* | 0.00 |
| Fruehauf de Mexico, S.A. de C.V. | 32.37* | 0.00 |
| Lodi Trailers | 32.37* | 0.00 |
| Norstar Trailers Mexico S de R.L. de C.V. (d/b/a Iron Bull Trailers) | 32.37* | 0.00 |
| Semiremolques El Paisano S.A. de C.V. | 32.37* | 0.00 |
| Ventura Trailers | 32.37* | 0.00 |
| All-Others | 32.37 | 0.00 |
*This rate is based on facts available with adverse inferences.
Thailand
| Exporter/Producer | Dumping Margin (Percent) | Cash Deposit Rate (Adjusted for Subsidy Offset(s)) (percent) |
|---|---|---|
| Dee Siam Manufacturing Co., Ltd. | 46.12 | 46.12 |
| Panus Assembly Co., Ltd. | 181.57* | 181.57* |
| All-Others | 46.12 | 46.12 |
*This rate is based on facts available with adverse inferences.
Import Statistics
| Mexico | 2022 | 2023 | 2024 |
|---|---|---|---|
| Value (USD) | $793,751,487 | $1,070,551,108 | $943,432,445 |
| Thailand | 2022 | 2023 | 2024 |
|---|---|---|---|
| Value (USD) | $91,869,058 | $70,777,422 | $25,575,454 |
Source: U.S. Census Bureau, accessed through S&P Global Trade Atlas (Harmonized Tariff Schedule of the United States (HTSUS) subheadings 8716.39.0090 and 8716.90.5060). Due to differences in the reported units of measurement under these HTSUS subheadings, the table above only reflects the value of such imports. Additionally, imports of chassis enter under HTSUS subheadings that may cover subject and non-subject merchandise. Therefore, publicly available import data may not accurately reflect actual imports of chassis covered by the scope of the investigations.
Next Steps
- The final determinations of these AD investigations are scheduled to be announced on or around February 9, 2026, based on 135 days from the date the preliminary determinations are published in the Federal Register.
- Commerce is also conducting concurrent countervailing duty (CVD) investigations of chassis from Mexico and Thailand.
- The U.S. International Trade Commission (ITC) is running concurrent injury determination investigations. For more information related to the ITC’s timeline, please refer to the ITC’s calendar.
Other Case Information
- The petitioner is the U.S. Chassis Manufacturers Coalition, whose members are Cheetah Chassis Corporation (Berwick, PA) and Stoughton Trailers LLC (Stoughton, WI).
- For general information and next steps, please refer to a list of preliminary FAQs.
Additional case information, including the scope of the investigations, is on file electronically via Enforcement and Compliance’s Antidumping and Countervailing Duty Centralized Electronic Service System (ACCESS). Once you log in, please refer to the following case numbers:
Trading Partner AD Case Number CVD Case Number Mexico A-201-865 C-201-866 Thailand A-549-854 C-549-855 Vietnam A-552-849 n/a - For more information on subsidy programs, please refer to the subsidies enforcement library.
- To date, Commerce maintains 781 AD and CVD orders that provide relief to American companies and industries impacted by unfair trade.