HS code · 6-digit subheading
HS Code 3907.99 – Polyesters; n.e.c. in heading no. 3907, saturated, in primary forms
HS code 3907.99 is the 6-digit subheading for polyesters, n.e.c. in heading no. 3907, saturated, in primary forms. It is used for polybutylene terephthalate (PBT) resin, polytrimethylene terephthalate (PTT) resin, polycyclohexylenedimethylene terephthalate (PCT) resin, saturated polyester resin for powder coatings and copolyester hot melt adhesives.
What HS 3907.99 covers
This HS code covers saturated polyesters in primary forms (pellets, chips, powders) that are not specifically classified elsewhere within heading 3907, and importantly, lack the carbon-carbon double bonds found in unsaturated polyesters. This broad category includes a diverse range of polyesters used in various applications where thermosetting is not required. Examples include certain types of engineering plastics, hot melt adhesives, powder coatings, and specialty fibers. Major importers are countries with advanced manufacturing industries, including automotive, electronics, and textiles, such as China, Germany, and Japan. Exporters are typically large chemical and polymer producers globally. Key aspects of trade involve the specific properties tailored for different applications, such as high temperature resistance, chemical resistance, or flexibility. The "saturated" nature means they are generally thermoplastic and can be re-melted and re-processed, offering different advantages compared to their unsaturated counterparts.
- Covers
- Polybutylene terephthalate (PBT) resin
- Polytrimethylene terephthalate (PTT) resin
- Polycyclohexylenedimethylene terephthalate (PCT) resin
- Saturated polyester resin for powder coatings
- Copolyester hot melt adhesives
- Thermoplastic polyester elastomers (TPEs)
- Examples
- BASF Ultradur (PBT)
- DuPont Sorona (PTT)
- Eastman Tritan (Copolyester)
- Arkema Rilsan (Polyester)
- Evonik Vestodur (PBT)
Codes often confused with 3907.99
Common mistake. The main confusion arises with unsaturated polyesters (390791) if the saturation characteristic is not correctly identified. It can also be mistaken for other types of plastics if the "polyester" chemical identity is not confirmed.
Top exporters and importers of HS code 390799, 2025
In 2025, the largest exporter of HS code 390799 in UN Comtrade data was Germany, with 14% of world exports; the largest importer in UN Comtrade data was China, with 13% 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 Germany $1.5B 14% of world exports
- 2 China $1.3B 13% of world exports
- 3 United States $1.2B 11% of world exports
World total: $10.2B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $1.4B 13% of world imports
- 2 Germany $963M 9.2% of world imports
- 3 United States $603M 5.7% of world imports
World total: $10.5B 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 that did not report are estimated from what other countries recorded trading with them. 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 codes for 3907.99 9
Brazil splits HS 3907.99 into 9 NCM codes, Mercosur's 8-digit tariff lines.
- 3907.99.1 Poly(butylene terephthalate)Poli(tereftalato de butileno) Group
- 3907.99.11 Glass-fibre filled poly(butylene terephthalate)Com carga de fibra de vidro
- 3907.99.12 Other poly(butylene terephthalate), liquid/pasteOutros, nas formas previstas na Nota 6 a) deste Capítulo
- 3907.99.19 Other poly(butylene terephthalate)Outros
- 3907.99.9 OtherOutros Group
- 3907.99.91 Other saturated polyesters, liquid or paste formsNas formas previstas na Nota 6 a) deste Capítulo
- 3907.99.92 Poly(epsilon-caprolactone)Poli(épsilon-caprolactona)
- 3907.99.93 DMT-CHDM-isophthalic acid copolyesterCopolímero de tereftalato de dimetila, cicloexanodimetanol e ácido isoftálico
- 3907.99.94 DMT-CHDM-tetramethylcyclobutanediol copolyesterCopolímero de tereftalato de dimetila, cicloexanodimetanol e tetrametil ciclobutanodiol
- 3907.99.95 DMT-CHDM-ethylene glycol copolyesterCopolímero de tereftalato de dimetila, cicloexanodimetanol e etilenoglicol
- 3907.99.99 Other saturated polyesters in primary formsOutros
All Brazil NCM codes in heading 39.07 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3907.99
What is HS code 390799?
HS code 390799 is a 6-digit subheading in the Harmonized System that covers: Polyesters; n.e.c. in heading no. 3907, saturated, in primary forms. This HS code covers saturated polyesters in primary forms (pellets, chips, powders) that are not specifically classified elsewhere within heading 3907, and importantly, lack the carbon-carbon double bonds found in unsaturated polyesters. This broad category includes a diverse range of polyesters used in various applications where thermosetting is not required. Examples include certain types of engineering plastics, hot melt adhesives, powder coatings, and specialty fibers. Major importers are countries with advanced manufacturing industries, including automotive, electronics, and textiles, such as China, Germany, and Japan. Exporters are typically large chemical and polymer producers globally. Key aspects of trade involve the specific properties tailored for different applications, such as high temperature resistance, chemical resistance, or flexibility. The "saturated" nature means they are generally thermoplastic and can be re-melted and re-processed, offering different advantages compared to their unsaturated counterparts.
What products fall under HS code 390799?
Polybutylene terephthalate (PBT) resin, Polytrimethylene terephthalate (PTT) resin, Polycyclohexylenedimethylene terephthalate (PCT) resin, Saturated polyester resin for powder coatings, Copolyester hot melt adhesives, Thermoplastic polyester elastomers (TPEs)
What are common misclassifications for HS code 390799?
The main confusion arises with unsaturated polyesters (390791) if the saturation characteristic is not correctly identified. It can also be mistaken for other types of plastics if the "polyester" chemical identity is not confirmed.
Which countries are the top exporters of goods under HS code 390799?
In 2025, the top exporters of HS code 390799 in UN Comtrade data were Germany ($1.5B, 14% of world exports), China ($1.3B) and the United States ($1.2B). World exports came to about $10.2B, 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 390799?
In 2025, the top importers of HS code 390799 in UN Comtrade data were China ($1.4B, 13% of world imports), Germany ($963M) and the United States ($603M). World imports came to about $10.5B, 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 390799 structured?
HS code 390799 is a 6-digit subheading under the Harmonized System. The first 2 digits (39) identify the chapter, digits 3-4 (07) 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 390799?
Brazil splits HS code 390799 into 9 NCM codes: 3907.99.11 (Glass-fibre filled poly(butylene terephthalate)), 3907.99.12 (Other poly(butylene terephthalate), liquid/paste), 3907.99.19 (Other poly(butylene terephthalate)), 3907.99.91 (Other saturated polyesters, liquid or paste forms), 3907.99.92 (Poly(epsilon-caprolactone)), 3907.99.93 (DMT-CHDM-isophthalic acid copolyester), 3907.99.94 (DMT-CHDM-tetramethylcyclobutanediol copolyester), 3907.99.95 (DMT-CHDM-ethylene glycol copolyester), and more listed on this page. The first 6 digits of each match the HS code.