Colombia Upholds Anti-Dumping Duties on Chinese Acrylic Sheets

On April 28, 2026, Colombia’s Ministry of Commerce, Industry and Tourism issued Resolution No. 148, confirming the affirmative final determination in the first sunset review of anti-dumping duties on acrylic sheets originating from China. This decision directly affects manufacturers and importers supplying EMI shielding enclosures and test fixtures across Latin America — particularly those relying on Chinese-sourced acrylic sheet materials.

Event Overview

On April 28, 2026, Colombia’s Ministry of Commerce, Industry and Tourism published Resolution No. 148, affirming the continuation of anti-dumping duties on acrylic sheets imported from China following the first sunset review. The measure applies to acrylic sheets used in applications including EMI shielding equipment enclosures and testing jigs. According to the announcement, non-exempt Chinese exporters will face additional tariff liabilities, and importers must submit supplementary origin-compliance documentation for customs clearance — potentially extending delivery timelines by 7–10 working days.

Industries Affected by This Measure

Direct Trading Enterprises
Importers and distributors in Colombia and other Andean Community markets that source acrylic sheets or finished EMI shielding enclosures directly from Chinese suppliers are subject to revised tariff assessments and heightened customs scrutiny. Impact manifests as increased landed costs, mandatory origin verification, and longer port clearance windows.

Raw Material Procurement Teams
Procurement units sourcing acrylic sheet material for downstream fabrication (e.g., for EMI shielding housings) now face tighter compliance requirements. Unverified shipments may be detained at Colombian ports pending submission of origin declarations, affecting just-in-time supply chains.

Contract Manufacturing & Fabrication Firms
Firms assembling EMI shielding solutions — especially those outsourcing acrylic sheet cutting, bending, or finishing to Chinese subcontractors — may experience delays in component receipt and added administrative overhead when clearing semi-finished goods classified under the same HS code.

Distribution & Channel Partners
Regional distributors serving South American OEMs or system integrators must reassess inventory planning and lead time buffers. Products incorporating acrylic sheets sourced from non-exempt Chinese producers may trigger reclassification or require retroactive documentation upon entry.

Supply Chain & Customs Compliance Providers
Third-party logistics providers, customs brokers, and trade compliance consultants supporting clients in Colombia must update internal checklists to include origin certification, tariff classification validation, and pre-clearance document readiness for acrylic sheet–related consignments.

What Relevant Enterprises or Practitioners Should Focus On and How to Respond

Monitor official updates on exemption eligibility and product scope

The resolution identifies certain suppliers or product specifications as potentially exempt; however, no public list has been published. Enterprises should track subsequent notices from Colombia’s National Directorate of Taxes and Customs (DIAN) and the Ministry for any clarifications on scope, exclusions, or application procedures.

Verify HS code alignment and origin documentation for all affected SKUs

Acrylic sheets used in EMI shielding enclosures may fall under multiple tariff headings depending on form (e.g., sheets vs. cut-to-size parts vs. assembled housings). Companies should audit current classifications and ensure origin statements meet Colombia’s requirements for preferential or non-preferential treatment — especially where processing occurs outside China.

Distinguish between policy issuance and operational implementation

While Resolution No. 148 is effective as of April 28, 2026, enforcement timelines for documentation mandates and customs inspection protocols may vary by port or DIAN regional office. Importers should confirm procedural expectations with local brokers before shipment rather than assuming uniform rollout.

Adjust procurement lead times and maintain alternative sourcing options

Given the potential 7–10 working day delay in customs clearance, procurement teams should revise safety stock levels and evaluate whether partial substitution with acrylic sheets from non-subject countries (e.g., South Korea, Germany, or domestic regional producers) is operationally feasible — without compromising EMI performance specifications.

Editorial Perspective / Industry Observation

Observably, this sunset review outcome signals Colombia’s continued prioritization of domestic polymer sheet manufacturing capacity — even as global demand for EMI shielding components rises. Analysis shows the decision does not introduce new duty rates but reinforces existing measures, suggesting stability rather than escalation in trade terms. From an industry perspective, it functions less as an immediate disruption and more as a formalized compliance checkpoint: one that elevates documentation rigor and exposes latent dependencies on single-source acrylic supply chains. Current developments warrant sustained monitoring — not only for Colombia-specific execution but also as a possible reference point for parallel reviews in neighboring jurisdictions.

Conclusion
This resolution confirms the ongoing applicability of anti-dumping duties on Chinese acrylic sheets in Colombia, with tangible implications for EMI shielding hardware supply chains across Latin America. It is best understood not as an isolated regulatory action, but as a reinforcement of long-standing trade safeguards — one that increases administrative and logistical thresholds for cross-border material flows. Stakeholders should treat it as a fixed parameter in near-term trade planning, rather than an evolving threat requiring reactive mitigation.

Information Source
Main source: Colombia Ministry of Commerce, Industry and Tourism, Resolution No. 148, issued April 28, 2026.
Note: Exemption criteria, implementation guidance by DIAN, and potential appeals remain under observation and are not yet publicly detailed.