GOKONGWEI-LED JG Summit Holdings, Inc. said its petrochemicals unit, JG Summit Olefins Corp. (JGSOC), is now on an indefinite commercial shutdown amid “unfavorable global market conditions.” “Given persisting unfavorable market conditions in the global petrochemical industry, JGSOC is now on an indefinite commercial shutdown,” JG Summit said in a statement on Thursday. “JGSOC continues to