Mexico SE/UPCI — Sunset Review Continuation of Anti-Dumping Duties on Coated Flat Steel from China and Chinese Taipei (5-year extension)

Mechanism

This is a sunset review (examen de vigencia) final resolution under Mexico's Ley de Comercio Exterior (LCE). The original anti-dumping investigation on coated flat steel from China and Chinese Taipei concluded with definitive duties published in 2017 (DOF, 5 June 2017). Under Mexican trade-remedy law, duties expire after five years unless the competent authority finds — following a sunset investigation — that revocation would foreseeably lead to continued or resumed dumping that damages domestic industry. SE/UPCI initiated the review on 2 June 2022 (DOF); the final resolution issued 13 September 2023 confirms continuation for a further five-year term.

Product scope: Flat products of carbon and/or alloy steel, corrosion-resistant, with metallic (e.g., zinc, Zn-Al, Zn-Mg-Al) and/or non-metallic (organic/paint) coatings. Classified under multiple LIGIE tariff fractions in Chapter 72.

Exporter-specific duty rates confirmed for the extended term:

The tariff_rate_pct frontmatter carries the 76.33 % catch-all rate for "all other Chinese exporters" (the residual, highest-burden bucket covering non-named PRC mills).

Downstream implications

• Fills a critical register gap: this is the first definitive Mexican AD/CVD trade-remedy

measure on file; the two prior MX SE entries are initiation resolutions (adhesive tapes and mirror glass, May 2026), not definitive orders.

• Coated flat steel (galvanised, Galvalume, pre-painted) is a key input for Mexican automotive

stamping, white goods, construction panels, and electrical-enclosure manufacturing — sectors concentrated in Monterrey, Saltillo, and the Bajío nearshoring corridor. The 76.33 % residual rate effectively price-walls Chinese origin material for most buyers.

• Chinese re-routing through third countries (Taipéi Chino named directly) is addressed by the

"independientemente del país de procedencia" (regardless of country of origin) clause, which mirrors the circumvention language in the original 2017 order.

• Taiwan-based producers (CSC in particular) retain a relatively low 22.26 % rate, similar to

the named Chinese majors — consistent with their historical cooperation in the original investigation.

Open questions

• Exact five-year expiry date (i.e., whether the term runs from the September 2023 publication

date or retroactively from the June 2022 review initiation) — affects whether a new sunset review must be initiated circa 2027 or 2028. Monitor DOF for the next examen de vigencia initiation notice.

• Whether Mexico's December 2024 LIGIE tariff decree (DOF 29 Dec 2024, filing slug

2025-12-29-mexico-decreto-ligie-1463-tariff-lines) overlaps with the same LIGIE fractions and adds a temporary MFN tariff layer on top of these AD duties — double-layer exposure for non-named importers.