Ethylene producers in Taiwan and Japan have made changes in their schedules for plant shutdowns. CPC Corp. (CPC) will permanently shut its No. 3 permanently shut its No. 3 naphtha cracker at Kaohsiung, with capacity to produce 230,000 tpa of ethylene, at the end of May. This is a delay of atleast two months from the originally planned schedule, to ensure steady supplies while it completes work on a new plant. Show Denko has delayed the restart of its ethylene plant in Oita, Japan, to the end of May from March 30. Production lines at the plant were shut for maintenance last month, and the company has extended the shutdown after it discovered a fault in cooling equipment on March 18.