May 21 News - On May 21, Shandong Lihuayi Weiyuan Chemical's ex-factory listed price for propylene glycol was set at 8,350 CNY/ton, up 350 CNY/ton from the previous day. Chempricehub comments on propylene glycol, bullish-bearish score: 1 (bullish). The increase in the manufacturer's listed price provides strong support for propylene glycol spot prices, benefiting the spot market.