On January 8, the DBP market in Jiangsu region showed strong consolidation, with a quoted price of 6,850 yuan/ton. In Shandong region, the DBP market also exhibited strong consolidation, with a quoted price of 6,750 yuan/ton. Meanwhile, in Zhejiang region, the DBP market remained strong and consolidated, with a quoted price of 7,000 yuan/ton. On the same day, the price of n-butanol, a raw material for the plasticizer DBP, fluctuated and rose, while the price of phthalic anhydride increased. The price of isooctanol remained stable with a strong trend. The cost of DBP raw materials rose, while PVC prices fluctuated and consolidated. Downstream demand remained weak, leading to a slight decrease in the operating rate of DBP production equipment. DBP supply remained sufficient, with low inventory levels at DBP factories. Downstream customers showed moderate purchasing enthusiasm, and transaction prices were subject to negotiation. The price range for DBP was 6,750–7,000 yuan/ton, reflecting a strong consolidation trend. Downward pressure on DBP prices weakened, while upward momentum increased, resulting in a strong consolidation in the DBP market.