May 21 News – On May 21, Shandong Zhuohang New Materials (Heze) Co., Ltd. set its ex-factory listed price for propylene glycol at 8,300 CNY/ton, up 300 CNY/ton from the previous day. Chempricehub comments on propylene glycol: Bullish/Bearish Score: 1. On May 21, Shandong Zhuohang New Materials (Heze) Co., Ltd. raised its ex-factory listed price for propylene glycol by 300 CNY/ton to 8,300 CNY/ton, indicating a strong willingness to support prices. This provides favorable support for the spot price of propylene glycol, driving bullish market expectations.