On January 7, the acetic anhydride market showed a strong upward trend. The mainstream ex-factory prices of acetic anhydride in the Shandong region were quoted at 4,100–4,200 yuan per ton, an increase of 50 yuan per ton, with actual transaction prices subject to negotiation. PriceSeek’s analysis of acetic anhydride gave a long-short score of 1. The article indicates that the ex-factory price of acetic anhydride rose by 50 yuan per ton, an increase of approximately 1.2%, suggesting tight market supply and demand or increased demand, which is favorable for spot prices. This moderate increase reflects short-term supply pressure or active downstream procurement, representing a general positive level.