HS code · 6-digit subheading
HS Code 5509.91 – Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with wool or fine animal hair, n.e.c. in heading no. 5509, not put up for retail sale
HS code 5509.91 is the 6-digit subheading for yarn, (not sewing thread), of synthetic staple fibres, mixed mainly or solely with wool or fine animal hair, n.e.c. in heading no. 5509, not put up for retail sale. It is used for polyester-wool blend yarn, acrylic-wool blend yarn, nylon-cashmere blend yarn, viscose-wool blend yarn (if synthetic is primary) and poly-alpaca blend yarn.
What HS 5509.91 covers
This category includes yarns, excluding sewing thread, made from synthetic staple fibres blended predominantly or entirely with wool or fine animal hair, and not prepared for retail sale. These blends combine the warmth, softness, and luxurious feel of natural fibers with the durability, strength, and often lower cost of synthetics. They are highly sought after by manufacturers of high-quality apparel (sweaters, suits), blankets, and upholstery, where a balance of luxury and practicality is desired. Importers are typically textile mills and fashion brands looking for specific aesthetic and performance qualities. Exporters are specialized yarn spinners with expertise in blending natural and synthetic fibers. The trade reflects a balance between luxury appeal and practical performance in textile products, catering to diverse market demands.
- Covers
- Polyester-wool blend yarn
- Acrylic-wool blend yarn
- Nylon-cashmere blend yarn
- Viscose-wool blend yarn (if synthetic is primary)
- Poly-alpaca blend yarn
- Synthetic-mohair blend yarn
- Spun blend yarn (synthetic/wool)
- Polyester-angora blend yarn
- Examples
- Südwolle Group (specializes in wool blends)
- Novita Yarns (some blends)
- Schoeller Spinning Group (wool blends)
- Indorama Ventures (polyester often blended)
- Reliance Industries (polyester often blended)
Codes often confused with 5509.91
Common mistake. This code is distinct from 550961 (acrylic/modacrylic mixed with wool/fine animal hair) by focusing on 'synthetic staple fibres' generally, and from 550999 if the blend is not primarily with wool or fine animal hair.
Top exporters and importers of HS code 550991, 2025
In 2025, the largest exporter of HS code 550991 in UN Comtrade data was China, with 61% of world exports; the largest importer in UN Comtrade data was Bangladesh, with about 17% 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 China $20M 61% of world exports
- 2 Italy $5.6M 17% of world exports
- 3 Hong Kong $2.0M 6.1% of world exports
World total: $33M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Bangladesh* ~$5.5M 17% of world imports · partner records ↗
- 2 Russia* ~$3.8M 12% of world imports · partner records ↗
- 3 China $3.1M 9.6% of world imports
World total: $32M 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 5509.91
Brazil does not split HS 5509.91: its NCM code is 5509.91.00.
All Brazil NCM codes in heading 55.09 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 5509.91
What is HS code 550991?
HS code 550991 is a 6-digit subheading in the Harmonized System that covers: Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with wool or fine animal hair, n.e.c. in heading no. 5509, not put up for retail sale. This category includes yarns, excluding sewing thread, made from synthetic staple fibres blended predominantly or entirely with wool or fine animal hair, and not prepared for retail sale. These blends combine the warmth, softness, and luxurious feel of natural fibers with the durability, strength, and often lower cost of synthetics. They are highly sought after by manufacturers of high-quality apparel (sweaters, suits), blankets, and upholstery, where a balance of luxury and practicality is desired. Importers are typically textile mills and fashion brands looking for specific aesthetic and performance qualities. Exporters are specialized yarn spinners with expertise in blending natural and synthetic fibers. The trade reflects a balance between luxury appeal and practical performance in textile products, catering to diverse market demands.
What products fall under HS code 550991?
Polyester-wool blend yarn, Acrylic-wool blend yarn, Nylon-cashmere blend yarn, Viscose-wool blend yarn (if synthetic is primary), Poly-alpaca blend yarn, Synthetic-mohair blend yarn, Spun blend yarn (synthetic/wool), Polyester-angora blend yarn
What are common misclassifications for HS code 550991?
This code is distinct from 550961 (acrylic/modacrylic mixed with wool/fine animal hair) by focusing on 'synthetic staple fibres' generally, and from 550999 if the blend is not primarily with wool or fine animal hair.
Which countries are the top exporters of goods under HS code 550991?
In 2025, the top exporters of HS code 550991 in UN Comtrade data were China ($20M, 61% of world exports), Italy ($5.6M) and Hong Kong ($2.0M). World exports came to about $33M, 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 550991?
In 2025, the top importers of HS code 550991 in UN Comtrade data were Bangladesh (about $5.5M, 17% of world imports), Russia (about $3.8M) and China ($3.1M). World imports came to about $32M, 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 550991 structured?
HS code 550991 is a 6-digit subheading under the Harmonized System. The first 2 digits (55) identify the chapter, digits 3-4 (09) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 550991?
In Brazil, HS code 550991 is NCM 5509.91.00. The last two digits are 00 because Brazil does not split this HS code further.