On January 28, the maleic anhydride market in Shandong experienced a slight increase. The ex-factory price of solid maleic anhydride hovered around 4,950 yuan per ton, while the ex-factory price of liquid maleic anhydride was around 4,750 yuan per ton. The auction transaction price in East China rose slightly by 10 yuan per ton, with the execution price in major production areas also showing a minor uptick. Downstream demand remained primarily driven by essential needs.