On January 4, the DBP market in Jiangsu region stabilized, with a quoted price of 6,750 yuan/ton. In Shandong region, the DBP market also stabilized, with a quoted price of 6,700 yuan/ton. In Zhejiang region, the DBP market remained stable, with a quoted price of 6,900 yuan/ton. On January 4, the price of n-butanol, a raw material for the plasticizer DBP, fluctuated and rose. The price of phthalic anhydride increased, and the price of isooctanol also rose. The cost of DBP raw materials increased, while PVC prices fluctuated and consolidated. Downstream demand remained weak, and DBP production equipment experienced a slight decline in operating rates. DBP supply was sufficient, and DBP factory inventories were low. Downstream customers showed moderate purchasing enthusiasm, with transaction prices determined through negotiation. The DBP price ranged from 6,700 to 6,900 yuan/ton. DBP prices remained strong and consolidated, with reduced downward pressure but continued upward momentum, indicating a strong and stable market trend.