Japan HS Code

HS Code 391000: Silicones in primary forms in Japan

Q: Is HS code 391000 the same across all countries?

Yes — up to the 6-digit level, HS code 391000 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Japan extends it under Japan HS / Statistical Code.

Q: What system does Japan use to classify HS code 391000?

Japan classifies products under the Customs Tariff Schedules of Japan (Japan HS / Statistical Code; locally 実行関税率表), which extends HS codes to 9 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 391000 in Japan?

The official source is https://www.customs.go.jp/english/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 391000 in Japan

Under Japan's Customs Tariff Schedules of Japan (実行関税率表), HS Code 391000 is the WCO Harmonized System subheading for Silicones in primary forms. This is the most detailed internationally standardized level; Japan extends classifications to 9 digits under its national tariff system. 391000 belongs to Section VII: Plastics and articles thereof; rubber and articles thereof, Chapter 39: Plastics and articles thereof, Heading 3910: Silicones in primary forms.

Explore more 2026 Latest Japan import export trade data and shipment records for HS Code Silicone Polymers on TradeInt global trade data platform

Classification Path of HS Code 391000 in Japan

Section VII

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

Chapter 39

Plastics and articles thereof

HS Code 3910

Silicones in primary forms

HS Code 391000

Silicones in primary forms

HS Code 391000010

Silicones in primary forms. > - In blocks of irregular shape, lumps, powders (including moulding powders), granules, flakes and similar bulk forms

HS Code 391000090

Silicones in primary forms. > - Other

HS Code 391000100

Silicones in primary forms > - Blocks of irregular shape, lumps, powders (including moulding powders), granules, flakes and similar bulk forms シリコーン（一次製品に限る。） > －塊（不規則な形のものに限る。）、粉（モールディングパウダーを含む。）、粒、フレークその他これらに類する形状のもの

HS Code 391000900

Silicones in primary forms > - Other シリコーン（一次製品に限る。） > －その他のもの

Japan Tariff Classification: Customs Tariff Schedules of Japan (Japan HS / Statistical Code)

In Japan, HS 391000 is classified under the Customs Tariff Schedules of Japan (実行関税率表) — a 9-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Customs Tariff Schedules of Japan (Japan HS / Statistical Code)

Local name 実行関税率表

Digits 9

Official source https://www.customs.go.jp/english/

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

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Top Trading Product of HS Code 3910

Top Japan import Product Under HS Code 3910

1 391000: Silicones in primary forms $199.9M

Figures shown for 2025.

For more 2026 recent data, search for Japan import trade records

Top Japan export Product Under HS Code 3910

1 391000: Silicones in primary forms $752.6M

Figures shown for 2025.

For more 2026 recent data, search for Japan export trade records

Related HS Code to Japan Silicone Polymers (391000)

HS Code 391000010

Silicones in primary forms. > - In blocks of irregular shape, lumps, powders (including moulding powders), granules, flakes and similar bulk forms

HS Code 391000090

Silicones in primary forms. > - Other

HS Code 391000100

Silicones in primary forms > - Blocks of irregular shape, lumps, powders (including moulding powders), granules, flakes and similar bulk forms

HS Code 391000900

Silicones in primary forms > - Other

HS Code 390110

Polyethylene having a specific gravity of less than 0,94

HS Code 390120

Polyethylene having a specific gravity of 0,94 or more

HS Code 390130

Ethylenevinyl acetate copolymers

HS Code 390140

Ethylenealphaolefins copolymers, having a specific gravity of less than 0,94

Frequently Asked Questions

What is HS code 391000 in Japan?

HS code 391000 covers Silicones in primary forms in Japan. It sits in Chapter 39 (Plastics and articles thereof), Heading 3910 of the Harmonized System, and is classified under Japan HS / Statistical Code.

Is HS code 391000 the same across all countries?

What system does Japan use to classify HS code 391000?

Where can I officially look up HS code 391000 in Japan?