May 15 - On May 15, Shandong Dongming Petrochemical Group Co., Ltd. quoted sulfur (liquid) at 7,500 CNY/mt, up by 150 CNY/mt. Sulfur (solid) was quoted at 7,650 CNY/mt, also up by 150 CNY/mt. According to Chempricehub's analysis of sulfur, the bullish-bearish rating stands at 1. As a representative refinery in China, Shandong Dongming Petrochemical's upward adjustment of 150 CNY/mt for both liquid and solid sulfur quotes provides positive support to the domestic sulfur spot market, which is expected to drive the center of gravity of sulfur spot prices higher.