Market evolution: High density polyethylene (CN 39012090) — 2015–2025

Introduction

This report analyses the evolution of EU trade in high-density polyethylene (HDPE) under customs code 39012090 over the period 2015-2025. Based on the provided trade data, the EU's position has undergone a fundamental transformation. What was once a net exporter of HDPE has become a significant net importer. This shift is characterised by declining export volumes and values, rising imports, a dramatic change in geographic trade flows, and increasing market volatility, particularly in the wake of recent global events. The analysis points to a period of structural change for the European petrochemical sector.

The Reversal of the EU's Trade Balance

The most significant trend in the data is the complete reversal of the EU's trade balance for HDPE over the examined decade. The Union has shifted from being a net exporter to a substantial net importer, a change with clear implications for its industrial competitiveness and supply security.

The erosion of net exporter status

In 2015, the EU recorded a positive trade balance of €130.7 million. This surplus was built on export volumes of 1.34 million tonnes, which substantially exceeded import volumes of 1.33 million tonnes. However, by 2025, the situation had reversed dramatically. The trade balance collapsed to a deficit of €654.1 million, marking a percentage change of -600.6%. This deficit was driven by import volumes surging to 1.91 million tonnes, far outstripping export volumes which fell to 0.91 million tonnes.

Divergent trajectories in value and volume

The decline in exports was pronounced across both value and volume metrics. The export value fell by 24.2% from €1.69 billion to €1.28 billion, while export volumes decreased by 31.7%. Conversely, imports expanded robustly, with their value growing by 24.1% to €1.93 billion and volumes jumping by 44.4%. A critical factor was the sustained period of negative net import reliance from 2015 to 2020 (where the EU was a net exporter) giving way to a positive and growing reliance from 2021 onwards, reaching 7.3% by 2025.

Shifting Geographies of Trade and Diversification

The reversal of the trade balance was accompanied by a major restructuring of both import and export partnerships. While some traditional relationships persisted, new dynamics emerged, leading to a measurable diversification of trade.

New import leaders and waning British trade

The EU's import landscape saw significant shifts. Saudi Arabia remained the top supplier by value, though its share slightly declined (-16.1%). The most striking change was the surge in imports from the United States, which grew by 436.4% to become the second-largest supplier by 2025. Meanwhile, imports from the United Kingdom collapsed by 65.6%, likely a consequence of Brexit-related trade frictions and supply chain realignment. The Herfindahl-Hirschman Index (HHI) for imports fell from 2,226 in 2015 to 1,800 in 2025, indicating a reduction in import concentration and a more diversified supplier base.

The collapse of intra-European export flows

The decline in EU exports was most acute in flows to the United Kingdom, which fell by 46.7% to €314 million, losing its position as the primary export destination. The HHI for exports also decreased substantially from 1,520 to 1,013, suggesting exports became less concentrated on a few key partners. Notably, exports to the Russian Federation, once a significant market, plummeted by 95.4% by 2025, reflecting the impact of geopolitical sanctions.

Market Volatility and Geopolitical Shocks

The period was marked by significant price volatility and identifiable supply shocks, particularly concentrated in 2021 and 2022. These events tested the resilience of the transformed trade patterns and exacerbated the EU's newly acquired import dependence.

Pronounced price shocks in key supply lines

The volatility analysis identifies major price shocks. The most severe was in imports from the United Kingdom in 2022, where prices jumped by 104.3% with an abnormality score of 9.2. Similarly, import prices from Egypt spiked by 46.7% in 2021. On the export side, prices to the United States surged by 75.0% in 2022. These shocks, occurring in a context of already tightening global markets post-pandemic, likely contributed to the widening trade deficit by increasing the cost of necessary imports.

Linking volatility to geopolitical events

The timing of these shocks, centered around 2022, correlates with the global energy price surge following Russia's invasion of Ukraine. HDPE, as a derivative of natural gas and oil, is highly sensitive to feedstock costs. The high volatility (Coefficient of Variation) in trade with the Russian Federation (1.32 for imports, 0.68 for exports) further underscores the destabilizing impact of the conflict on this specific trade relationship. The EU's increased trade intensity (from 38.3% to 48.7%) indicates the economy became more exposed to such international price transmissions during this period.

Conclusion

The EU's HDPE market (CN 39012090) experienced a structural transformation between 2015 and 2025. The defining trend was the shift from a net exporter to a net importer, driven by declining domestic export competitiveness and rising import demand. This was facilitated by a diversification of supply sources away from traditional partners like the United Kingdom and towards suppliers in the Middle East and the United States, though this shift was itself challenged by significant geopolitical price shocks. The data suggests a European market becoming more integrated into global trade but also more vulnerable to external supply and price volatility. The decline in domestic production volumes (-13.9%) alongside rising imports points to potential challenges for EU industrial capacity in this critical polymer sector.