Petro China Dushanzi Petrochemical has shut down its no1 and no2 cracker units for maintenance turnaround. Earlier the cracker units were shut down in the last week of July and are likely to remain off-stream for around two months. Units are based at Xinjiang, China, the No. 1 cracker has an ethylene capacity of 260,000 mt/year and No. 2 cracker has an ethylene capacity of 1 million mt/year.