Market evolution: Sewing thread of man-made filaments (CN 5401) — 2015–2025

Introduction

This report examines the evolution of the European Union's extra-EU trade in sewing thread of man-made filaments (customs code 5401) over the period 2015–2025. The product covers both synthetic filament thread (540110) and artificial filament thread (540120), with the synthetic variant accounting for the vast majority of both import and export volumes.

Over the decade, the EU's trade position in this product category has undergone a structural transformation. Three interlinked dynamics stand out: a widening net-export surplus driven by rising export values alongside declining import volumes; a dramatic geographic reconfiguration of trade flows triggered in large part by Brexit; and a contraction of domestic production that has elevated the EU's trade openness and export orientation to a remarkable degree. The following sections detail each of these dynamics in turn.

1. A Widening Net Export Surplus Anchored in Shrinking Domestic Production

The most striking macro-level trend for CN 5401 is the simultaneous strengthening of the EU's trade surplus and the contraction of its domestic production base. While exports grew modestly in value, imports declined more sharply, and EU-manufactured output fell by nearly half.

The trade balance improved by over 60 % between 2015 and 2025

The EU's overall trade in CN 5401 shows a clear asymmetry: exports held relatively steady in volume while gaining in value, whereas imports contracted in both dimensions.

The net import reliance indicator confirms this trajectory: the EU moved from near balance (−1.6 % in 2015) to a pronounced net-export position (−44.1 % in 2025), having reached a trough of −57.1 % along the way. A consistently negative sign denotes net exports.

EU production of man-made filament sewing thread fell by 45 %

Domestic EU production tells a contrasting story to the trade balance:

Production halved over the decade, falling from 24,360 tonnes to 13,392 tonnes, with the trough occurring around the pandemic years (minimum 11,842 tonnes). Despite this contraction, exports remained essentially flat in volume, implying that a far larger share of the diminishing output was directed toward external markets.

Export propensity and trade intensity surged as production shrank

This structural shift is captured by two vulnerability indicators:

• Export propensity (exports as a share of output) rose from 3.0 % in 2015 to 58.3 % in 2025 — an increase of over 1,800 %.
• Trade intensity (combined exports and imports relative to the domestic market) rose from 4.4 % to 67.4 %.

These figures indicate that the EU's sewing-thread market has become fundamentally outward-facing: what was once a largely self-sufficient domestic sector now operates in a highly internationalised environment. The declining production base, rather than a surge in external demand, is the primary driver of this transformation.

2. Brexit and the Geographic Reconfiguration of Trade Partners

The period 2015–2025 witnessed a significant reshuffling of the EU's trading partners for CN 5401. The United Kingdom's departure from the EU single market stands out as the single most disruptive event, but broader shifts — including the consolidation of Asian suppliers and the rise of North African and Eastern European export markets — have also redrawn the trade map.

The UK's role as an import and export partner collapsed after Brexit

Before Brexit, the United Kingdom was the EU's second-largest source of imports and a major export destination. The data reveal the scale of the disruption:

Imports from the UK fell by nearly 60 %, from €26.3 M to €10.8 M. The volatility analysis confirms that this was not a gradual decline but a shock event: in 2021, a price shock of 216.9 % with an abnormality score of 1,047 was detected on UK imports, coinciding with the full implementation of the EU–UK Trade and Cooperation Agreement. A second shock hit UK-bound exports in 2022, with a price drop of 46.9 %. The UK's coefficient of variation for import flows (0.81) is among the highest of any partner, reflecting the instability introduced by Brexit.

China consolidated its position as the EU's primary import source

With UK imports declining, China became the undisputed top supplier:

China grew its share modestly while maintaining a low volatility (CV of 0.17), making it a stable and increasingly dominant supplier. Türkiye also expanded, becoming the second-largest import source with €17.1 M. Meanwhile, several Southeast Asian suppliers — Indonesia, Thailand, and South Korea — saw their exports to the EU contract dramatically, suggesting either competitive displacement or shifting production geography.

Import concentration (HHI) for value rose from 2,415 to 2,552 (+5.7 %), while volume concentration increased far more sharply (+64.0 %), reflecting the growing weight of a smaller number of suppliers — principally China and Türkiye.

Export markets diversified toward Tunisia, Ukraine, and Australia

On the export side, the EU maintained a more diversified partner base (export HHI of 683, well below the import threshold):

The United States remained the single largest export market (€18.4 M), essentially flat over the period. Tunisia and Ukraine posted the strongest growth, rising by 38.6 % and 27.3 % respectively — likely reflecting the EU's nearshoring and offshoring strategies in garment manufacturing. Tunisia, in particular, benefits from geographical proximity and preferential trade arrangements. Ukraine's growth is notable in the context of broader EU–Ukraine economic integration, though the conflict beginning in 2022 has introduced volatility (CV of 0.18).

3. Internal EU Specialisation, Price Divergence, and Competitive Shifts

Beyond aggregate trade flows, the structure of the EU's internal market for CN 5401 reveals significant differences in specialisation across Member States and between product sub-segments.

Germany dominates exports; Italy, Spain, and the Netherlands are gaining ground

The EU reporter data shows that Germany accounted for the lion's share of EU exports throughout the period:

Germany's export value was essentially stable at around €68 M, but its share in a growing total has likely declined slightly. Italy saw the most significant absolute gain among non-German exporters (+53.3 %), consistent with its strong textile-manufacturing tradition. Spain more than doubled its exports (+121.1 %), and the Netherlands tripled its share (+220.9 %), potentially reflecting its role as a logistics and re-export hub.

On the import side, the picture is more volatile. Germany remained the largest EU importer (€26.4 M, +38.2 %), while Hungary and Czechia saw their imports collapse by over 95 % — a striking decline that may reflect supply-chain restructuring or changes in reporting practices following the UK's exit from the EU customs territory.

Romania stands out as the most specialised EU producer

The revealed comparative advantage (RCA) analysis for 2025 identifies Romania as by far the most specialised EU Member State in CN 5401:

Romania's RCA of 11.79 is exceptional, indicating that sewing thread represents a vastly disproportionate share of its export basket relative to the EU average. This aligns with Romania's role as a major textile and garment manufacturing hub in Central and Eastern Europe. Germany, despite having the largest absolute production share (40.6 %), shows a more moderate RCA of 1.92, reflecting its highly diversified industrial base.

At the other end of the spectrum, Luxembourg (RCA 0.02), Ireland (0.02), and Belgium (0.03) show no meaningful specialisation in this product.

Synthetic filament thread dominates, but artificial filament commands higher export prices

The product sub-segment breakdown reveals a clear hierarchy between the two sub-categories:

Imports — synthetic filament thread (540110):

Imports — artificial filament thread (540120):

Synthetic filament thread accounts for roughly 94 % of import volumes. Its import unit value rose from €7,550/t to €8,338/t (+10.4 %), suggesting either input cost inflation or a shift toward higher-specification products. Artificial filament thread, though smaller in volume, saw its import price decline from €7,165/t to €4,694/t (−34.5 %), potentially reflecting oversupply or commoditisation.

On the export side, the artificial filament sub-segment consistently commands substantially higher unit values — around €19,319/t in 2025 versus €18,721/t for synthetic filament — suggesting that EU producers occupy a higher-value niche in the smaller artificial filament segment.

Conclusion

Over the 2015–2025 period, the EU's market for sewing thread of man-made filaments has been reshaped by three converging forces: a declining domestic production base, a reconfiguration of trade geography driven by Brexit, and an intensifying export orientation.

The EU has moved from near self-sufficiency to a pronounced net-export position, with its trade surplus widening from €36.6 M to €59.1 M. This shift is not the result of an export boom — exports grew only modestly (+10.7 % in value) — but rather of a more significant contraction in both imports (−12.6 %) and domestic production (−45.0 % in volume). The EU now exports a far larger share of its diminished output, with export propensity rising to 58.3 %.

Geographically, Brexit has been the defining disruption. The United Kingdom's share of EU imports fell by nearly 60 %, creating a vacuum partially filled by China and Türkiye, which have consolidated their positions as the EU's primary external suppliers. On the export side, traditional markets (the US, the UK) have been relatively stable, while Tunisia and Ukraine have emerged as high-growth destinations.

Internally, the market is characterised by Germany's continued dominance in absolute terms, Romania's exceptional specialisation, and the rapid growth of Italy, Spain, and the Netherlands as exporters. The synthetic filament sub-segment drives the overwhelming majority of trade volumes, while the smaller artificial filament niche commands premium export prices.

The key vulnerability going forward lies in the combination of shrinking domestic production, rising import concentration (particularly toward China), and the heightened geopolitical and logistical risks that have marked the post-2020 period. The EU's position as a net exporter is sustainable only so long as its remaining producers maintain their competitive edge in a market where the production base continues to erode.