HS code · 6-digit subheading
HS Code 5509.99 – Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with fibres (other than wool, fine animal hair or cotton), n.e.c. in heading no. 5509, not put up for retail sale
HS code 5509.99 is the 6-digit subheading for yarn, (not sewing thread), of synthetic staple fibres, mixed mainly or solely with fibres (other than wool, fine animal hair or cotton), n.e.c. in heading no. 5509, not put up for retail sale. It is used for polyester-linen blend yarn, acrylic-silk blend yarn, nylon-jute blend yarn, poly-hemp blend yarn and synthetic-bamboo blend yarn.
What HS 5509.99 covers
This residual HS code covers yarns, not sewing thread, made from synthetic staple fibres blended predominantly or entirely with other fibres not specifically classified elsewhere in heading 5509 (i.e., not wool, fine animal hair, or cotton), and not put up for retail sale. This broad category includes a wide array of specialized blends designed for specific performance requirements, such as industrial textiles, technical fabrics, or niche apparel. The 'other fibres' could include linen, silk, jute, or other less common natural or artificial fibers. Importers are often manufacturers with specialized needs, while exporters are innovative yarn producers. Trade in these yarns reflects the diverse and evolving demands of the global textile industry for customized material solutions, pushing the boundaries of textile innovation.
- Covers
- Polyester-linen blend yarn
- Acrylic-silk blend yarn
- Nylon-jute blend yarn
- Poly-hemp blend yarn
- Synthetic-bamboo blend yarn
- Polyester-ramie blend yarn
- Modacrylic-flax blend yarn
- Synthetic-seaweed blend yarn
- Examples
- Lenzing AG (specialty fibers often blended)
- Indorama Ventures (polyester often blended with various fibers)
- Toray Industries (synthetics used in diverse blends)
- Huvis (synthetics used in diverse blends)
- Specialized technical textile yarn producers
Codes often confused with 5509.99
Common mistake. This is a 'basket' code, so it's often a default if other specific blend codes (e.g., 550991, 550992, 550951) are not applicable, leading to potential misclassification if the primary blend component is not carefully identified.
Top exporters and importers of HS code 550999, 2025
In 2025, the largest exporter of HS code 550999 in UN Comtrade data was China, with 46% 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 $64M 46% of world exports
- 2 Türkiye $22M 16% of world exports
- 3 Germany $8.5M 6.1% of world exports
World total: $138M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Bangladesh* ~$23M 17% of world imports · partner records ↗
- 2 Russia* ~$12M 9.1% of world imports · partner records ↗
- 3 China $7.0M 5.1% of world imports
World total: $136M 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 5509.99
Brazil does not split HS 5509.99: its NCM code is 5509.99.00.
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 5509.99
What is HS code 550999?
HS code 550999 is a 6-digit subheading in the Harmonized System that covers: Yarn; (not sewing thread), of synthetic staple fibres, mixed mainly or solely with fibres (other than wool, fine animal hair or cotton), n.e.c. in heading no. 5509, not put up for retail sale. This residual HS code covers yarns, not sewing thread, made from synthetic staple fibres blended predominantly or entirely with other fibres not specifically classified elsewhere in heading 5509 (i.e., not wool, fine animal hair, or cotton), and not put up for retail sale. This broad category includes a wide array of specialized blends designed for specific performance requirements, such as industrial textiles, technical fabrics, or niche apparel. The 'other fibres' could include linen, silk, jute, or other less common natural or artificial fibers. Importers are often manufacturers with specialized needs, while exporters are innovative yarn producers. Trade in these yarns reflects the diverse and evolving demands of the global textile industry for customized material solutions, pushing the boundaries of textile innovation.
What products fall under HS code 550999?
Polyester-linen blend yarn, Acrylic-silk blend yarn, Nylon-jute blend yarn, Poly-hemp blend yarn, Synthetic-bamboo blend yarn, Polyester-ramie blend yarn, Modacrylic-flax blend yarn, Synthetic-seaweed blend yarn
What are common misclassifications for HS code 550999?
This is a 'basket' code, so it's often a default if other specific blend codes (e.g., 550991, 550992, 550951) are not applicable, leading to potential misclassification if the primary blend component is not carefully identified.
Which countries are the top exporters of goods under HS code 550999?
In 2025, the top exporters of HS code 550999 in UN Comtrade data were China ($64M, 46% of world exports), Türkiye ($22M) and Germany ($8.5M). World exports came to about $138M, 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 550999?
In 2025, the top importers of HS code 550999 in UN Comtrade data were Bangladesh (about $23M, 17% of world imports), Russia (about $12M) and China ($7.0M). World imports came to about $136M, 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 550999 structured?
HS code 550999 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 (99) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 550999?
In Brazil, HS code 550999 is NCM 5509.99.00. The last two digits are 00 because Brazil does not split this HS code further.