3903.30.00.00 - Acrylonitrile-butadiene-styrene (ABS) copolymers

This HTS category, 3903.30.00.00, specifically covers Acrylonitrile-butadiene-styrene (ABS) copolymers in their primary forms. ABS is a thermoplastic polymer known for its toughness, impact resistance, and rigidity. It is produced by polymerizing styrene and acrylonitrile in the presence of polybutadiene, creating a material with a unique combination of properties derived from each constituent monomer. Common applications for ABS include automotive parts, electronic housings, consumer goods such as toys and luggage, and piping.

Within the broader category of "Polymers of styrene, in primary forms," this subheading is distinct from its siblings. Polystyrene (3903.10) refers to homopolymers of styrene. Styrene-acrylonitrile (SAN) copolymers (3903.20.00.00) represent a different copolymer where styrene is polymerized with acrylonitrile, lacking the butadiene component that provides ABS with its characteristic rubbery impact modification. The "Other" category (3903.90) would encompass any other styrene-based copolymers not specifically listed.

As a leaf node, 3903.30.00.00 does not have further subdivisions. Therefore, classification under this heading relies on accurately identifying the material as an acrylonitrile-butadiene-styrene (ABS) copolymer. Importers and exporters should ensure their documentation clearly specifies the composition and that the material is presented in a primary form, such as granules, powders, or flakes, as defined by Chapter 39 of the HTS.