SINGAPORE — Hengli Petrochemical International, the former Singapore trading arm of sanctions-hit Hengli Petrochemical (Dalian) Refinery, plans to cease operations, four industry sources said on Monday (May 11).The operation is likely to wind down in late May, three of the sources said.China-based Hengli Petrochemical (Dalian) did not respond immediately to an emailed request for comment.Hengli Petrochemical International employed about 100 people and traded mostly oil and petrochemical derivatives before the parent company was placed under US sanctions, two of the people said.Some staff have been told they were being made redundant while some are to be moved to other parts of the Hengli group that were not under US sanctions, some of the sources said.The sanctions on Hengli Petrochemical (Dalian) Refinery were imposed by the US Treasury last month over alleged purchases of Iranian oil, which Hengli denies. Read more