Market evolution: Polarising sheets (CN 900120) — 2015–2025

Introduction

Sheets and plates of polarising material (CN 900120) are critical components in liquid-crystal displays (LCDs), optical filters, and a wide range of electronic and industrial applications. Over the decade spanning 2015 to 2025, the European Union's trade in this product underwent a profound transformation. EU imports collapsed in volume by over 90%, while import values fell by nearly 70%. At the same time, unit prices surged dramatically, and the EU's domestic production and export profile strengthened considerably. This report examines these dynamics across three sections, tracing the decline of traditional Asian suppliers, the revolution in pricing, and the EU's gradual shift toward greater strategic autonomy in this critical material.

1. A Structural Collapse in EU Imports and the Erosion of Asian Dominance

Import volumes fell by more than 90% over the decade

The most striking feature of the EU's polarising-sheet trade is the near-total collapse of import volumes. Total import quantity dropped from 2,150 tonnes in 2015 to just 177 tonnes in 2025 — a decline of 91.8%. Import values fell in parallel, from €68.8 million to €21.6 million (−68.6%). The steeper decline in volume relative to value signals a fundamental shift in what is being traded and at what price, a theme explored further in Section 2.

South Korea's role as the dominant supplier virtually disappeared

The decline in imports was not distributed evenly across partner countries. South Korea, which supplied €42.8 million worth of polarising sheets in 2015 — representing the single largest source of EU imports — saw its exports to the EU collapse to just €3.5 million by 2025, a decline of 91.9%. China followed a similar trajectory, falling from €7.0 million to €1.0 million (−86.3%), while imports from Hong Kong dropped to near zero (−100%). The table below summarises the evolution of the EU's main import partners:

Japan remained the most resilient traditional supplier, while new partners emerged

While Korean and Chinese supplies evaporated, Japan's exports to the EU declined only modestly (−16.2%), consolidating Japan's position as the most stable Asian supplier. Meanwhile, Taiwan and the United States significantly expanded their EU-bound shipments. Taiwan grew from €1.3 million to €3.1 million (+132.6%), and the United States from €1.4 million to €3.7 million (+168.0%). This geographic diversification is reflected in a decline in the import concentration index (HHI) from 4,299 to 2,811 (−34.6% by value), indicating that the EU's import base became substantially less dependent on any single supplier.

EU domestic production expanded, partially substituting imports

A key factor underpinning the import collapse is the growth of EU domestic production. Production quantities rose from 1,225,764 kg to 1,800,000 kg (+46.8%), while production values grew from €20.4 million to €45.0 million (+120.5%). Germany emerged as the most specialised EU producer with a revealed comparative advantage (RCA) of 2.54 in 2025, followed by the Netherlands (RCA 1.87) and Poland (RCA 1.82). Among the major EU importing Member States, the Netherlands saw the steepest import decline (from €27.0M to €1.2M, −95.4%), followed by Czechia (−88.5%) and Poland (−69.3%), suggesting that downstream industrial restructuring — including potential shifts in LCD panel assembly — played a role.

2. A Price Revolution: Escalating Unit Values and Periodic Shocks

Import and export unit prices roughly tripled over the period

While volumes contracted, unit prices moved in the opposite direction — and forcefully so. The average import price rose from €31,963 per tonne in 2015 to €121,313 per tonne in 2025, an increase of 279.5%. Export prices climbed from €64,520 per tonne to €174,502 per tonne (+170.5%). The export premium over imports (EU exports consistently priced higher than imports) suggests that the EU tends to export higher-specification or more processed polarising sheets, while importing more commoditised grades.

The price surge reflects a shift toward higher-value product segments

The simultaneous collapse of volume and explosion of unit values is consistent with a structural market evolution. Global demand for traditional LCD polarisers has plateaued or declined as display technologies shift toward OLED and microLED, which use different or no polarising components. What remains in the polarising-sheet trade increasingly consists of specialised, higher-value materials for industrial optics, automotive displays, and niche applications — explaining why fewer tonnes now command substantially higher total values. The EU production data reinforces this interpretation: a 46.8% increase in output quantity translated into a 120.5% increase in production value, implying a rising average production value per kilogram.

Isolated but significant price shocks were detected in the data

The volatility analysis reveals several noteworthy price shock events. The most pronounced was an export price shock to South Korea centred on 2020, with an abnormality score of 143.8 and a year-on-year price shift of +1,107.4%. A large export price shock to Japan was detected in 2017 (abnormality 55.4, shift +507.4%), and one to Serbia in 2020 (abnormality 33.2, shift +676.4%). These spikes are likely connected to isolated shipments of very high-value specialty material or sudden supply disruptions — potentially linked to the COVID-19 pandemic in the case of the 2020 events.

Certain trade corridors also exhibited persistently high volatility, as measured by the coefficient of variation (CV). Imports from Hong Kong (CV 2.08), Canada (CV 2.77), and Türkiye (CV 2.41) were the most erratic, while Japan (CV 0.20) and the United States (CV 0.28) provided the most stable supply flows. On the export side, the highest volatility was observed in flows to Serbia (CV 3.20) and Israel (CV 3.17), consistent with sporadic, small-volume trade.

3. Toward Greater Strategic Autonomy: The EU's Changing Trade Position

Net import reliance declined substantially

The EU's net import reliance — the share of domestic consumption met by net imports — fell from 67.2% in 2015 to 49.5% in 2025 (−26.4%). During this period it reached a low of 46.2% before settling just below 50%. This means that, while the EU still relies on external suppliers for roughly half its polarising-sheet needs, the dependence has been substantially reduced compared to the nearly two-thirds reliance observed a decade ago. The trade balance consequently improved from −€63.4 million to −€13.1 million, a 79.4% improvement.

Export propensity surged, indicating a growing outward orientation

Despite falling export volumes (from 74 tonnes to 48 tonnes, −35.9%), the EU's export propensity — exports as a share of production — rose dramatically from 63.5% to 140.3% (+121.2%). Values above 100% imply that re-exports or stock drawdowns may be occurring, or that the PRODCOM production figures underestimate actual output. Either way, the trend signals that a growing share of EU-produced polarising material is directed toward international markets. The trade intensity of the product also rose, from 90.1% to 111.9%, confirming that polarising sheets remain a highly traded good but with a growing EU role in global supply.

Germany consolidated its position as the EU's polarising-sheet hub

Among EU Member States, Germany stands out as the principal actor on both the production and export side. German exports of polarising sheets grew from €3.1 million to €7.4 million (+140.8%), making Germany by far the largest EU exporter in 2025 and accounting for the majority of outbound trade. The Netherlands, Belgium, and the United Kingdom also saw significant export growth. Meanwhile, Germany's imports declined from €11.6M to €6.3M (−45.5%), indicating a shift from import-dependent consumption toward domestically supplied production.

Import concentration fell, reducing supply-chain risk

The decline in import concentration (HHI from 4,299 to 2,811) and the geographic diversification of suppliers represent a meaningful reduction in supply-chain risk. The collapse of South Korean shipments, which once dominated, was offset by the resilience of Japan and the emergence of Taiwan and the United States as alternative sources. Export concentration also fell sharply (HHI from 1,894 to 1,022), reflecting a more diversified EU customer base — with growing exports to Korea (+241.6%), the United Kingdom (+396.1%), and the United States (+73.5%).

Conclusion

Over the 2015–2025 period, the EU's trade in polarising sheets underwent a fundamental transformation characterised by three intertwined dynamics. First, import volumes collapsed by over 90%, driven by the near-disappearance of South Korean and Chinese supplies and by the growth of EU domestic production, which expanded by 46.8% in quantity. Second, unit prices roughly tripled, reflecting a market shift from high-volume, lower-value LCD-grade materials toward lower-volume, higher-value specialty applications. Third, the EU's trade position strengthened materially: net import reliance fell from 67% to below 50%, the trade deficit narrowed by 79%, and Germany consolidated its role as the bloc's production and export hub. The polarising-sheet market has evolved from one dominated by large-volume Asian imports into a more balanced, higher-value trade in which the EU plays a substantially larger role — though it still remains a net importer by both value and volume.