May 12 – On May 12, Shandong Zhuohang New Materials (Heze) Co., Ltd. lowered its ex-factory list price for propylene glycol by 200 RMB/ton from the previous day to 8,400 RMB/ton. Chempricehub's propylene glycol bull/bear rating: -1. On May 12, the ex-factory list price of propylene glycol at Shandong Zhuohang New Materials (Heze) Co., Ltd. was cut by 200 RMB/ton to 8,400 RMB/ton. The retreat in supplier quotations exerts bearish pressure on spot propylene glycol prices, with short-term spot prices facing downward pressure.