Korean Authorities Probe Petchem Producers’ Naphtha Imports

  • Several local firms targeted in customs investigations
  • Russia supply in focus; direct flows to Korea dipped after war

A naphtha plant in Mailiao, Taiwan.

Photographer: Maurice Tsai/Bloomberg
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South Korean customs authorities are investigating the origins of the nation’s imports of naphtha, a plastics-making ingredient, with a focus on Russian supplies.

The probes are examining purchases by several petrochemical makers in the country, people with knowledge of the matter said.