Brazil NCM · 8-digit subitem

NCM 3903.90.20 – Acrylonitrile-styrene-butyl acrylate copolymers

NCM 3903.90.20 (also written 39039020) is Brazil's code for acrylonitrile-styrene-butyl acrylate copolymers. Its first 6 digits are HS code 3903.90.

Official description of NCM 3903.90.20

PortuguêsOfficial
Copolímeros de acrilonitrilo-estireno-acrilato de butilo (ASA)
EnglishUnofficial translation

Acrylonitrile-styrene-butyl acrylate (ASA) copolymers

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

How to read NCM 3903.90.20

39Chapter 03Heading 90Subheading

HS code 3903.90
Same in every country

2Item 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 3903.90.20 Acrylonitrile-styrene-butyl acrylate (ASA) copolymers Copolímeros de acrilonitrilo-estireno-acrilato de butilo (ASA)

Other NCM codes under HS 3903.90

3903.90.10 Methyl methacrylate-butadiene-styrene copolymersCopolímeros de metacrilato de metilbutadieno-estireno (MBS) 3903.90.90 Other styrene polymers in primary formsOutros

Questions about NCM 3903.90.20

What is NCM 3903.90.20?

NCM 3903.90.20 (39039020) is the Brazilian (Mercosur) code for acrylonitrile-styrene-butyl acrylate copolymers. Its official Portuguese description is “Copolímeros de acrilonitrilo-estireno-acrilato de butilo (ASA)”.

What is the HS code for NCM 3903.90.20?

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 3903.90.20?

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.