On January 7, the maleic anhydride market in Shandong region experienced a slight increase. The ex-factory price of solid maleic anhydride was around 4,950 yuan per ton, while the ex-factory price of liquid maleic anhydride was around 4,550 yuan per ton. The auction transaction price in Yantai rose by 50-60 yuan per ton, with market transactions primarily driven by rigid demand.