Product classification
HS code for High tenacity viscose yarn: 5403.10
Yarn, artificial, filament, monofilament (less than 67 decitex), of high tenacity viscose rayon, not for retail sale, not sewing thread.
Classification of high tenacity viscose yarn under HS 5403.10
High tenacity viscose yarn is classified under HS code 5403.10. This code is specific to artificial filament yarn (as opposed to synthetic filament yarn) that possesses high tenacity. Viscose rayon is an artificial fiber derived from regenerated cellulose, and the "high tenacity" designation requires the yarn to meet a specific strength threshold. According to Note 6 to Section XI, high tenacity yarn of viscose rayon must have a tenacity greater than 27 cN/tex. This yarn is typically not put up for retail sale and is not classified as sewing thread, which would move it to heading 5401. It is primarily used in industrial applications, such as the reinforcement of rubber tires (tire cord) or high-strength industrial fabrics. The distinction between heading 5402 (synthetic) and 5403 (artificial) is fundamental to textile classification, based on the chemical origin of the polymer. Viscose, being a regenerated fiber, always falls under artificial filaments.
- Covers
- High tenacity viscose rayon filament yarn
- Industrial grade viscose filament
- Viscose yarn for tire cord manufacturing
- Multi-filament high tenacity artificial yarn
- Viscose rayon monofilament (less than 67 decitex)
- Also under 5403.10
- Lenzing Viscose (specialty grades)
- Birla Cellulose (high-tenacity variants)
- Sateri (industrial grades)
- Kelheim Fibres (specialty viscose)
- Teijin Aramid (comparison for high-tenacity industrial use)
Codes often confused with 5403.10
Common mistake. A common error is classifying this product under 5402.11, which is for high tenacity yarn of nylon or other polyamides. The difference lies in the material: 5402 is for synthetic filaments (petrochemical based), while 5403 is for artificial filaments (cellulose based). Another misclassification is 5403.31, which covers regular (non-high tenacity) viscose yarn. If the tenacity is 27 cN/tex or less, it must be moved to the regular viscose subheadings. Finally, if the yarn is prepared for retail sale, it must be classified under 5406.
Top exporters and importers of HS 540310 (the code used for high tenacity viscose yarn), 2025
In 2025, the largest exporter of HS 540310 (the code used for high tenacity viscose yarn) in UN Comtrade data was India, with 38% of world exports; the largest importer in UN Comtrade data was Egypt, with 34% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 540310, not only high tenacity viscose yarn.
Top exporters 2025 · share of world exports
- 1 India $20M 38% of world exports
- 2 Poland $8.7M 17% of world exports
- 3 Vietnam* ~$7.6M 15% of world exports · partner records ↗
World total: $51M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Egypt $47M 34% of world imports
- 2 Luxembourg $12M 8.4% of world imports
- 3 Japan $10M 7.4% of world imports
World total: $137M 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. 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 high tenacity viscose yarn
Brazil classifies high tenacity viscose yarn under NCM 5403.10.00: HS 5403.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about high tenacity viscose yarn
What is the HS code for High tenacity viscose yarn?
The HS code for High tenacity viscose yarn is 540310 (Yarn, artificial; filament, monofilament (less than 67 decitex), of high tenacity viscose rayon, not for retail sale, not sewing thread). The HS code for high tenacity viscose rayon filament yarn is 5403.10.
How do I classify High tenacity viscose yarn for customs?
High tenacity viscose yarn is classified under HS code 540310 — Yarn, artificial; filament, monofilament (less than 67 decitex), of high tenacity viscose rayon, not for retail sale, not sewing thread. This is a 6-digit subheading level code.
What is the difference between synthetic and artificial yarn?
Synthetic yarns (5402) are made from polymers produced by organic synthesis (like nylon), while artificial yarns (5403) are made from regenerated organic polymers (like viscose rayon from wood pulp).
Which countries are the top exporters of high tenacity viscose yarn (HS 540310)?
In 2025, the top exporters of HS 540310 (the code used for high tenacity viscose yarn) in UN Comtrade data were India ($20M, 38% of world exports), Poland ($8.7M) and Vietnam (about $7.6M). World exports came to about $51M, 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 high tenacity viscose yarn (HS 540310)?
In 2025, the top importers of HS 540310 (the code used for high tenacity viscose yarn) in UN Comtrade data were Egypt ($47M, 34% of world imports), Luxembourg ($12M) and Japan ($10M). World imports came to about $137M, 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.
Is the HS code for High tenacity viscose yarn the same in all countries?
The base HS code 540310 for High tenacity viscose yarn is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for high tenacity viscose yarn in Brazil?
In Brazil, high tenacity viscose yarn (HS 540310) is classified under NCM 5403.10.00.