May 9 - On May 9, Shandong Huifeng Petrochemical Co., Ltd. released its latest ex-factory offer for propylene, reducing the price by 250 yuan/ton to 9,500 yuan/ton. Chempricehub comments on propylene with a bullish-bearish rating of -1. On the spot market, Shandong Huifeng Petrochemical is a core supplier of propylene in China. This ex-factory price reduction of 250 yuan/ton to 9,500 yuan/ton will drive regional spot propylene quotations lower, suppressing spot transaction prices and bearing negative implications for the spot market. On the futures front, on May 8, the main propylene contract 2607 on the Zhengzhou Commodity Exchange closed at 8,268 yuan/ton, down 202 yuan/ton from the previous trading day, with trading volume exceeding 9,000 lots and open interest increasing by 1,457 lots. Short-term bearish momentum is sufficient, putting pressure on futures prices.