Hong Kong, China Special Administrative Region HS Code

HS Code 400231: Isobuteneisoprene (butyl) rubber (IIR); haloisobuteneisoprene rubber (CIIR or BIIR) : Isobuteneisoprene (butyl) rubber (IIR) in Hong Kong, China Special Administrative Region

Q: Is HS code 400231 the same across all countries?

Yes — up to the 6-digit level, HS code 400231 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Hong Kong, China Special Administrative Region extends it under HKHS.

Q: What system does Hong Kong, China Special Administrative Region use to classify HS code 400231?

Hong Kong, China Special Administrative Region classifies products under the Hong Kong Harmonized System (HKHS; locally 香港協調制度), which extends HS codes to 8 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 400231 in Hong Kong, China Special Administrative Region?

The official source is https://www.customs.gov.hk/en/home/index.html. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 400231 in Hong Kong, China Special Administrative Region

Under Hong Kong, China Special Administrative Region's Hong Kong Harmonized System (香港協調制度), HS Code 400231 is the WCO Harmonized System subheading for Isobuteneisoprene (butyl) rubber (IIR); haloisobuteneisoprene rubber (CIIR or BIIR) : Isobuteneisoprene (butyl) rubber (IIR). This is the most detailed internationally standardized level; Hong Kong, China Special Administrative Region extends classifications to 8 digits under its national tariff system. 400231 belongs to Section VII: Plastics and articles thereof; rubber and articles thereof, Chapter 40: Rubber and articles thereof, Heading 4002: Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 4001 with any product of this heading, in primary forms or in plates, sheets or strip.

Explore more 2026 Latest Hong Kong, China Special Administrative Region import export trade data and shipment records for HS Code Butyl Rubber (IIR) on TradeInt global trade data platform

Classification Path of HS Code 400231 in Hong Kong, China Special Administrative Region

Section VII

Chapters (39-40) Plastics and articles thereof; rubber and articles thereof

Chapter 40

Rubber and articles thereof

HS Code 4002

Synthetic rubber and factice derived from oils, in primary forms or in plates, sheets or strip; mixtures of any product of heading 4001 with any product of this heading, in primary forms or in plates, sheets or strip

HS Code 400231

Isobuteneisoprene (butyl) rubber (IIR); haloisobuteneisoprene rubber (CIIR or BIIR) : Isobuteneisoprene (butyl) rubber (IIR)

HS Code 40023100

ISOBUTENE-ISOPRENE (BUTYL) RUBBER (IIR) IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIP 異丁烯-異戊二烯（丁基）橡膠（IIR），初級形狀或成板、片或帶狀

Hong Kong, China Special Administrative Region Tariff Classification: Hong Kong Harmonized System (HKHS)

In Hong Kong, China Special Administrative Region, HS 400231 is classified under the Hong Kong Harmonized System (香港協調制度) — a 8-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Hong Kong Harmonized System (HKHS)

Local name 香港協調制度

Digits 8

Official source https://www.customs.gov.hk/en/home/index.html

You know what 400231 means. Now see 2026 latest real trade activity for Butyl Rubber (IIR) in Hong Kong, China Special Administrative Region.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

Search 2026 Latest Hong Kong, China Special Administrative Region Import Data Search 2026 Latest Hong Kong, China Special Administrative Region Export Data

Top Trading Product of HS Code 4002

Top Hong Kong, China Special Administrative Region import Product Under HS Code 4002

1 400220: Butadiene rubber (BR) $21.0M 2 400270: Ethylenepropylenenonconjugated diene rubber (EPDM) $12.5M 3 400299: Other : Other $12.1M

Figures shown for 2025.

For more 2026 recent data, search for Hong Kong, China Special Administrative Region import trade records

Top Hong Kong, China Special Administrative Region export Product Under HS Code 4002

1 400299: Other : Other $11.4M 2 400270: Ethylenepropylenenonconjugated diene rubber (EPDM) $5.1M 3 400219: Styrenebutadiene rubber (SBR); carboxylated styrenebutadiene rubber (XSBR) : Other $4.7M

Figures shown for 2025.

For more 2026 recent data, search for Hong Kong, China Special Administrative Region export trade records

Related HS Code to Hong Kong, China Special Administrative Region Butyl Rubber (IIR) (400231)

HS Code 40023100

ISOBUTENE-ISOPRENE (BUTYL) RUBBER (IIR) IN PRIMARY FORMS OR IN PLATES, SHEETS OR STRIP

HS Code 400211

Styrenebutadiene rubber (SBR); carboxylated styrenebutadiene rubber (XSBR) : Latex

HS Code 400219

Styrenebutadiene rubber (SBR); carboxylated styrenebutadiene rubber (XSBR) : Other

HS Code 400220

Butadiene rubber (BR)

HS Code 400239

Isobuteneisoprene (butyl) rubber (IIR); haloisobuteneisoprene rubber (CIIR or BIIR) : Other

HS Code 400241

Chloroprene (chlorobutadiene) rubber (CR) : Latex

HS Code 400249

Chloroprene (chlorobutadiene) rubber (CR) : Other

HS Code 400251

Acrylonitrilebutadiene rubber (NBR) : Latex

HS Code 400259

Acrylonitrilebutadiene rubber (NBR) : Other

HS Code 400260

Isoprene rubber (IR)

Frequently Asked Questions

What is HS code 400231 in Hong Kong, China Special Administrative Region?

HS code 400231 covers Isobuteneisoprene (butyl) rubber (IIR); haloisobuteneisoprene rubber (CIIR or BIIR) : Isobuteneisoprene (butyl) rubber (IIR) in Hong Kong, China Special Administrative Region. It sits in Chapter 40 (Rubber and articles thereof), Heading 4002 of the Harmonized System, and is classified under HKHS.

Is HS code 400231 the same across all countries?

What system does Hong Kong, China Special Administrative Region use to classify HS code 400231?

Where can I officially look up HS code 400231 in Hong Kong, China Special Administrative Region?