Changcheng’s production site began its annual overhaul at the end of June and finished all the maintenance work in late August. Now, all production equipment at ChemChina Petrochemical’s Jinan branch has returned to full production and the company is working to complete its annual production tasks. Production returned to normal in pressure reducing, gas fractioning, C4, coking, hydrogen making, and catalytic equipments by Aug 23 and all the production equipment is stable in operations.