JG Summit Olefins operates a 320,000 tonnes per year (tpy) naphtha cracker, the only such unit in the Philippines. The company shut the plant in October for maintenance and expansion works to raise the nameplate capacity to 480,000 tpy.

But JG delayed the restart of the cracker because of technical issues and weak petrochemical margins due to high raw material costs.

Throughput at the cracker is expected to reach full capacity by Thursday, the person added.

(Reporting by Seng Li Peng; Editing by Christian Schmollinger)