HS code · 6-digit subheading
HS Code 5403.39 – Yarn, artificial; filament, monofilament (less than 67 decitex), single, n.e.c. in heading no. 5403, not for retail sale, not sewing thread
HS code 5403.39 is the 6-digit subheading for yarn, artificial, filament, monofilament (less than 67 decitex), single, n.e.c. in heading no. 5403, not for retail sale, not sewing thread. It is used for cuprammonium rayon filament yarn, modal filament yarn, lyocell filament yarn, specialized artificial single yarn and regenerated cellulose filament.
What HS 5403.39 covers
This HS code serves as a residual category for single artificial filament yarns, not specifically mentioned elsewhere in heading 5403, with a linear density of less than 67 decitex, and not put up for retail sale or as sewing thread. It covers a diverse range of regenerated cellulose fibers beyond viscose rayon and cellulose acetate, such as cuprammonium rayon, modal, or lyocell, when presented as single filaments. These specialized yarns are traded globally by textile mills seeking unique properties like enhanced softness, breathability, or specific dyeing characteristics for high-end apparel, intimate wear, and technical textiles. Exporters are often innovative fiber manufacturers pushing the boundaries of artificial fiber technology. The 'n.e.c.' (not elsewhere specified) nature means careful identification of the specific artificial fiber type is crucial for correct classification.
- Covers
- Cuprammonium rayon filament yarn
- Modal filament yarn
- Lyocell filament yarn
- Specialized artificial single yarn
- Regenerated cellulose filament
- Fine denier artificial yarn
- Examples
- Lenzing Modal Filament
- Asahi Kasei Cupro
- Tencel Lyocell Filament
Codes often confused with 5403.39
Common mistake. Often confused with other specific artificial yarns (e.g., 540331 for viscose rayon) or even synthetic yarns (Chapter 54, Section XI) if the exact fiber type isn't identified, requiring detailed material analysis.
Top exporters and importers of HS code 540339, 2025
In 2025, the largest exporter of HS code 540339 in UN Comtrade data was Japan, with 73% of world exports; the largest importer in UN Comtrade data was China, with 41% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Japan $115M 73% of world exports
- 2 China $21M 13% of world exports
- 3 Taiwan* ~$17M 11% of world exports · partner records ↗
World total: $158M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $45M 41% of world imports
- 2 Türkiye $26M 24% of world imports
- 3 Italy $10M 9.1% of world imports
World total: $110M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 5403.39
Brazil does not split HS 5403.39: its NCM code is 5403.39.00.
All Brazil NCM codes in heading 54.03 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 5403.39
What is HS code 540339?
HS code 540339 is a 6-digit subheading in the Harmonized System that covers: Yarn, artificial; filament, monofilament (less than 67 decitex), single, n.e.c. in heading no. 5403, not for retail sale, not sewing thread. This HS code serves as a residual category for single artificial filament yarns, not specifically mentioned elsewhere in heading 5403, with a linear density of less than 67 decitex, and not put up for retail sale or as sewing thread. It covers a diverse range of regenerated cellulose fibers beyond viscose rayon and cellulose acetate, such as cuprammonium rayon, modal, or lyocell, when presented as single filaments. These specialized yarns are traded globally by textile mills seeking unique properties like enhanced softness, breathability, or specific dyeing characteristics for high-end apparel, intimate wear, and technical textiles. Exporters are often innovative fiber manufacturers pushing the boundaries of artificial fiber technology. The 'n.e.c.' (not elsewhere specified) nature means careful identification of the specific artificial fiber type is crucial for correct classification.
What products fall under HS code 540339?
Cuprammonium rayon filament yarn, modal filament yarn, lyocell filament yarn, specialized artificial single yarn, regenerated cellulose filament, fine denier artificial yarn
What are common misclassifications for HS code 540339?
Often confused with other specific artificial yarns (e.g., 540331 for viscose rayon) or even synthetic yarns (Chapter 54, Section XI) if the exact fiber type isn't identified, requiring detailed material analysis.
Which countries are the top exporters of goods under HS code 540339?
In 2025, the top exporters of HS code 540339 in UN Comtrade data were Japan ($115M, 73% of world exports), China ($21M) and Taiwan (about $17M). World exports came to about $158M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 540339?
In 2025, the top importers of HS code 540339 in UN Comtrade data were China ($45M, 41% of world imports), Türkiye ($26M) and Italy ($10M). World imports came to about $110M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 540339 structured?
HS code 540339 is a 6-digit subheading under the Harmonized System. The first 2 digits (54) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (39) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 540339?
In Brazil, HS code 540339 is NCM 5403.39.00. The last two digits are 00 because Brazil does not split this HS code further.