March 19 (Reuters) - On March 19, Shandong Huifeng Petrochemical Co., Ltd. announced a new ex-factory price for propylene, raising it by 500 yuan per ton to 8,550 yuan per ton. The catalytic cracking unit with an annual capacity of 45,000 tons will be shut down on March 27, 2025, while the 60,000-ton-per-year catalytic cracking unit is operating normally.