Tongsuh ACN Plant Shutdown: India Market Impact Alert

Tongsuh halts production at No.4 ACN unit

Jun 15, 2026

Tongsuh Petrochemical has taken off stream its No. 4 acrylonitrile (ACN) unit in Ulsan. A source in South Korea informed a team member, “The company is heard to have halted operations at the plant around March 7, 2026, owing to technical issues. Further details regarding the duration of the shutdown could not be ascertained." Located in Ulsan, South Korea, the No. 4 ACN unit has a production capacity of 265,000 mt/year.
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