December 31 News On December 31, Shandong Zhuohang New Materials (Heze) Co., Ltd. set the ex-factory listed price of propylene glycol at 5,300 yuan/ton, a decrease of 50 yuan/ton. Chempricehub Analysis of Propylene Glycol Bull-Bear Score: -1 Shandong Zhuohang New Materials has lowered the ex-factory listed price of propylene glycol by 50 yuan/ton to 5,300 yuan/ton, reflecting ample supply or weak demand in the spot market, which may lead to downward pressure on spot prices. A Bull-Bear Score of -1 indicates a generally bearish impact.