Idemitsu SM Plant Shutdown: India Supply Alert

Idemitsu SM Malaysia eyes resumption of output at SM plant

Jun 11, 2026

Idemitsu SM Malaysia is likely to restart its styrene monomer (SM) plant in Pasir Gudang. A source in Malaysia informed a team member, “The company is expected to resume operations at the plant in the second half of September 2025. The plant was taken offline for maintenance around August 25, 2025. However, an official statement from the concerned authority was unavailable.” Located in Pasir Gudang, Malaysia, the SM plant has a production capacity of 240,000 mt/year.