Styrene polymers; expansible polystyrene, in primary forms

HS v2017 Code: 390311

About styrene polymers; expansible polystyrene, in primary forms

HS code 390311 covers the production and trade of styrene polymers, specifically expansible polystyrene in primary forms. This industry plays a crucial role in the broader plastics and chemicals sector, providing essential raw materials for a wide range of consumer and industrial applications. Expansible polystyrene is a versatile material with applications in packaging, insulation, and construction, making it an important component of the global economy.

Production process

The production of expansible polystyrene under HS code 390311 typically involves the polymerization of styrene monomers. This process is often carried out using suspension or bulk polymerization techniques, where the styrene monomers are combined with initiators and other additives to form the polystyrene polymer. The resulting polymer is then expanded, often using a blowing agent, to create the final expansible polystyrene product.

Production inputs

The main inputs required for the production of expansible polystyrene under HS code 390311 include styrene monomers, polymerization catalysts, and blowing agents. Additionally, the industry relies on specialized production equipment, such as polymerization reactors, extruders, and molding machines. The availability and cost of these raw materials and machinery can significantly impact the overall competitiveness of the industry.

Production outputs

The primary output of the industry covered by HS code 390311 is expansible polystyrene in primary forms, which is then used as an input for a variety of downstream industries. These include the 392010 Manufacture of plastic plates, sheets, film, foil and strip industry, the 682110 Manufacture of flat glass industry, and the 682091 Manufacture of glass wool and other mineral wools industry, among others. The versatility of expansible polystyrene makes it a valuable commodity in the global marketplace.

Revisions to 390311

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 390311. The most recent 1 version of this code (390311) is in the HS v2022 system:

This page shows a legacy version of code 390311 ( HS v2017).

Older versions

Family tree for styrene polymers; expansible polystyrene, in primary forms

    graph LR
    A["<a href='/classifications/hs/v2017/39'>39: Plastics and articles thereof</a>"]
A --> B["<a href='/classifications/hs/v2017/3903'>3903: Polymers of styrene, in primary forms</a>"]
B --> C["<a href='/classifications/hs/v2017/390311'>390311: Styrene polymers; expansible polystyrene, in primary forms</a>"]

    B --> D["<a href='/classifications/hs/v2017/390319'>390319: Styrene polymers; (other than expansible polystyrene), in primary forms</a>"]
B --> E["<a href='/classifications/hs/v2017/390320'>390320: Styrene polymers; styrene-acrylonitrile (SAN) copolymers, in primary forms</a>"]
B --> F["<a href='/classifications/hs/v2017/390330'>390330: Styrene polymers; acrylonitrile-butadiene-styrene (ABS) copolymers, in primary forms</a>"]
B --> G["<a href='/classifications/hs/v2017/390390'>390390: Styrene polymers; in primary forms, n.e.c. in heading no. 3903</a>"]

    

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