Market evolution: Low density polyethylene (CN 39011090) — 2015–2025

Introduction

This report examines the trade dynamics of CN 39011090 — polyethylene with a specific gravity below 0.94 in primary forms, excluding linear polyethylene — commonly known as conventional low-density polyethylene (LDPE). The product sits within the broader family of ethylene polymers in primary forms and is distinguished from its linear variant (CN 39011010), which has gained significant market share over the past decade due to its superior mechanical properties and processing efficiency.

Over the 2015–2025 period, the European Union remained a consistent net exporter of this product, maintaining a trade surplus throughout. However, this overarching stability masks deep structural shifts: EU production declined by over 22 %, import volumes rose by 10.7 % while export volumes fell by 5.7 %, and the geographic orientation of both import and export flows underwent significant rebalancing. Meanwhile, a major price shock in 2021 and increasing supply concentration introduced new dimensions of vulnerability.

The following three sections unpack these dynamics in turn.

A decade of eroding production capacity and growing trade openness

EU domestic production has contracted sharply

The most striking structural development over 2015–2025 is the substantial decline in EU domestic production of LDPE:

Production hit its trough at 3,371,397 t (in thousands of kg), representing a cumulative decline of roughly one million tonnes from the 2015 baseline. This contraction reflects broader European petrochemical trends: the closure of older, smaller crackers; cost disadvantages relative to feedstock-rich regions (US ethane, Middle Eastern gas); and increasing competition from naphtha-based Asian producers.

The EU has nonetheless maintained a persistent trade surplus

Despite shrinking domestic capacity, the EU has remained a net exporter of conventional LDPE throughout the entire period:

The surplus, however, narrowed considerably: the value balance shrank by 21.9 %, and the volume surplus collapsed from over 216,000 tonnes to just 74,000 tonnes. The net import reliance, which was consistently negative (confirming net exporter status), moved from −12.9 % in 2015 to −10.4 % in 2025, having briefly approached near-balance at −3.4 % at its closest point.

Rising trade intensity signals structural import dependence growing

Two indicators capture the EU's increasing openness on this product:

Trade intensity — the ratio of total trade (imports + exports) to production — rose by more than half, meaning that the EU's LDPE market has become substantially more dependent on international flows to balance supply and demand. Export propensity similarly climbed, indicating that a growing share of what the EU does produce is being channelled abroad rather than consumed domestically.

A dramatic reorientation of trading partners

The United States has become the EU's fastest-growing import source

The most conspicuous shift on the import side is the surge of US-origin LDPE into the EU:

US imports grew more than fivefold, rising from €37 M to €198 M, making the United States the EU's third-largest import source by 2025. This mirrors the massive build-out of US Gulf Coast ethylene and polyethylene capacity in the wake of the shale gas revolution, which created a structural cost advantage and a wave of new export-oriented capacity.

Iranian imports have virtually collapsed

At the other extreme, Iranian LDPE imports fell from €50 M in 2015 to just €5 M in 2025 (−90.1 %). This reflects the cumulative impact of international sanctions, which severely constrained Iran's ability to conduct trade with EU buyers, particularly in financial settlement and shipping logistics.

The United Kingdom has lost its position as the dominant export destination

On the export side, the most significant reorientation involved the United Kingdom and the rise of China and Türkiye:

EU exports to the UK nearly halved, likely reflecting post-Brexit trade friction (customs formalities, rules of origin, and divergent regulatory requirements). Meanwhile, China and Türkiye both roughly doubled their share of EU exports, becoming the two largest destinations by 2025. Russia saw a dramatic −72.2 % decline, consistent with the post-2022 sanctions regime and the broader geopolitical decoupling.

Germany's role in intra-EU import flows has been transformed

Among EU Member States as reporters, Germany's trajectory is striking: its imports fell from €126 M to just €17 M (−86.6 %), while Belgium and the Netherlands saw their imports grow by 59.5 % and 116.5 % respectively. This likely reflects the consolidation of importing through major port hubs (Antwerp, Rotterdam) and possibly the idling of German LDPE production capacity, which would have previously absorbed feedstock through dedicated import channels. On the export side, Germany remained the largest EU exporter at €329 M but declined from its 2015 level of €381 M, while Sweden (+32.8 %) and France (+35.1 %) gained ground.

Price shocks, supply concentration, and emerging vulnerabilities

The 2021 global petrochemical price spike left a deep mark

The year 2021 stands out as a period of acute price disruption. The data reveals three major price shocks, all centred on 2021:

These shocks reflect the global energy and petrochemical price surge of 2021, driven by post-COVID demand recovery, logistics bottlenecks, and spiking natural gas and naphtha costs. The extremely high abnormality scores (particularly Iran at 15.1) indicate that these price movements were well beyond historical norms for the respective trade relationships. EU-wide, average import prices swung between a minimum of €910/t and a maximum of €1,647/t over the full period — an amplitude of over 80 %.

Import supply is becoming more concentrated

The Herfindahl-Hirschman Index (HHI) for imports has trended upward:

Import concentration by volume rose particularly sharply (+22.6 %), reaching an HHI of 1,809 — a level that, while still below the 2,500 threshold typically considered "highly concentrated," reflects a meaningful narrowing of the import base. This is consistent with the growing dominance of a few large suppliers (the US, Qatar, and the UK accounting for the bulk of import value) and the withdrawal of others (Iran, Norway). The UK remains by far the single largest import partner, but the gap with the US has narrowed dramatically.

Export concentration also increased but remained at lower absolute levels, reflecting the EU's more diversified export base across China, Türkiye, India, Serbia, Algeria, and other markets.

Export volatility is moderate, but select import partnerships carry elevated risk

The coefficient of variation (CV) reveals which trade relationships are most volatile:

The US, despite its rapid import growth, shows high volatility (CV = 0.75), suggesting that trade volumes with this partner have been subject to significant year-to-year variation rather than a smooth upward trajectory. Iranian imports are the most volatile of all (CV = 0.89), driven by the sanctions-related collapse. On the export side, the Russia relationship (CV = 0.40) reflects the sharp discontinuity following 2022 sanctions.

Specialisation confirms a concentrated geography of production

The 2025 specialisation data reveals that LDPE production is heavily concentrated in a handful of Member States:

Belgium alone accounts for nearly a quarter of EU production, reflecting its large petrochemical cluster around Antwerp. Sweden, despite a smaller production base, shows the highest relative specialisation. At the other end, Ireland (RSCA −0.99), Croatia, Latvia, Denmark, and Estonia have virtually no export specialisation in this product, confirming that LDPE production and trade is a geographically concentrated activity within the EU.

Conclusion

Over the 2015–2025 decade, the EU's conventional LDPE market has undergone a quiet but profound structural transformation. Domestic production declined by 22 %, yet the EU maintained its net-exporter status — albeit with a rapidly narrowing surplus and trade volumes that have become far more dependent on international flows than a decade ago. Trade intensity rose to 47.3 %, up from 30.3 % in 2015, signalling that the EU's LDPE market can no longer be understood as a largely self-sufficient system.

Geographically, the map has been redrawn. The United States emerged as a major import supplier (from €37 M to €198 M), Iran virtually disappeared from the import base, and the UK lost its dominance as an export destination as China and Türkiye surged forward. Within the EU, Belgium and the Netherlands consolidated their roles as import gateways, while Germany's import footprint collapsed.

The 2021 price spike — with import price shifts exceeding 77 % for key partners — exposed the vulnerability of a market increasingly reliant on a smaller number of suppliers. Rising import-side concentration (HHI up 22.6 % by volume) compounds this risk. Going forward, the interplay between continued European production rationalisation, growing import dependence, and geopolitical disruptions will be the central dynamic shaping this market.