Brazil NCM · 8-digit subitem

NCM 3903.90.90 – Other styrene polymers in primary forms

NCM 3903.90.90 (also written 39039090) is Brazil's code for other styrene polymers in primary forms. Its first 6 digits are HS code 3903.90.

Official description of NCM 3903.90.90

PortuguêsOfficial
Outros
EnglishUnofficial translation

Other

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 3903.90.90

39Chapter 03Heading 90Subheading

HS code 3903.90
Same in every country

9Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 39 Plastics and articles thereof Plástico e suas obras.
  2. Heading 39.03 Polymers of styrene, in primary forms Polímeros de estireno, em formas primárias.
  3. Subheading 3903.90 Styrene polymers; in primary forms, n.e.c. in heading no. 3903 Outros
  4. Subitem 3903.90.90 Other Outros

Other NCM codes under HS 3903.90

3903.90.10 Methyl methacrylate-butadiene-styrene copolymersCopolímeros de metacrilato de metilbutadieno-estireno (MBS) 3903.90.20 Acrylonitrile-styrene-butyl acrylate copolymersCopolímeros de acrilonitrilo-estireno-acrilato de butilo (ASA)

Questions about NCM 3903.90.90

What is NCM 3903.90.90?

NCM 3903.90.90 (39039090) is the Brazilian (Mercosur) code for other styrene polymers in primary forms. Its official Portuguese description is “Outros”.

What is the HS code for NCM 3903.90.90?

HS 3903.90 (Styrene polymers; in primary forms, n.e.c. in heading no. 3903). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 3903.90.90?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.