Petro China of Dalian Petrochemical is planning to shut its aromatic unit for maintenance turnaround. The unit is likely to undergo maintenance on 17th March and is expected to remain off-stream for around 45 days. The unit is based at Dalian in China and has the production capacity of 2,90,000 mt/year of benzene, 3,52,000 mt/year of toluene and 4,40,000 mt/year of mixed xylenes.