China Imposes Provisional Duties On HIIR From Canada, Japan

China’s Ministry of Commerce (MOFCOM) has named the measure in its official notice as “Ministry of Commerce Announcement No. 39 of 2025,” a preliminary ruling that requires provisional deposits on halogenated butyl rubber (HIIR) from Canada and Japan from 14 August 2025. The ruling follows an investigation opened on 14 September 2024.

Key points

• MOFCOM Preliminary Ruling No. 39 of 2025, issued 12 August 2025.
• Provisional deposits apply to Canadian and Japanese HIIR from 14 August 2025.
• Investigation into India terminated as negligible share.
• Scope covers chlorobutyl and bromobutyl, CN 40023910 and 40023990.

What MOFCOM decided

MOFCOM’s preliminary ruling finds dumping on HIIR imports from Canada and Japan and imposes provisional deposits at company-specific rates. India was dropped due to a market share below 3 percent during the period examined. [Paraphrased statement, no direct quote provided].

Scope

Covers halogenated butyl rubber, including chlorobutyl and bromobutyl grades. CN tariff codes: 40023910 and 40023990.

Provisional deposit rates

CountryCompanyProvisional deposit rateCanadaArlanxeo Canada Inc.26.2%CanadaAll other exporters40.5%JapanJapan Butyl Co., Ltd.13.8%JapanAll other exporters30.1%

Rates are to be lodged with Chinese customs on import from 14 August 2025.

How the deposit works

These are provisional deposits, not final duties. MOFCOM may adjust them at the final determination. Deposit calculation, per the notice:

Deposit amount = taxable import value × deposit rate × (1 + import VAT rate).

Why it matters for tyre makers

HIIR is the standard air-retaining inner-liner compound for tubeless tyres and also appears in heat-resistant tubes and sealing applications. Any change in landed cost can move tyre production economics and pricing. See our analysis of tyre price increases in China in 2025 and our Guangrao 2025 expo coverage for wider materials context.

• Tyre price increases in China: what is driving the surge in 2025 (Tyre News)
• Global tyre industry gathers at Guangrao 2025 for record-breaking expo (Tyre News)

Timeline

• 14 September 2024: Investigation launched into HIIR from Canada, Japan and India.
• 12 August 2025: MOFCOM issues Preliminary Ruling No. 39 of 2025.
• 14 August 2025: Provisional deposits start at customs.

What happens next

Importers continue to post deposits until the final decision. Exporters and importers can submit written comments to MOFCOM within 10 days of the announcement. Changes to the rates or scope may follow in the final ruling.

‍

‍

‍