On January 5, the DBP market in Jiangsu region stabilized, with a quoted price of 6,800 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 5, the price of n-butanol, a raw material for the plasticizer DBP, experienced a volatile increase. The price of phthalic anhydride rose, and the price of isooctanol also increased. The cost of DBP raw materials rose, 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 at low levels. Downstream customers showed moderate purchasing enthusiasm, with transaction prices determined through negotiation. The price of DBP ranged from 6,700 to 6,900 yuan/ton. DBP prices remained strong and consolidated, with reduced downward pressure and continued upward momentum. The DBP market maintained a strong consolidation trend.