On May 19, Shandong Lihuayi Weiyuan Chemical's ex-factory listed price for propylene glycol was set at 8,000 yuan/ton, up 100 yuan/ton from the previous day. Chempricehub's analysis of propylene glycol: Bullish/Bearish Score: 1. On May 19, Shandong Lihuayi Weiyuan Chemical's ex-factory listed price for propylene glycol was executed at 8,000 yuan/ton, an increase of 100 yuan/ton from the previous day. The manufacturer's price hike provides cost support for the propylene glycol spot market, boosting bullish sentiment and benefiting the price movement of propylene glycol in the spot market.