On February 5, the DBP market in Jiangsu region was weak and consolidating, with a quoted price of 7,900 yuan/ton. In Shandong region, the DBP market was weak and consolidating, with a quoted price of 7,800 yuan/ton. In Zhejiang region, the DBP market was weak and consolidating, with a quoted price of 8,000 yuan/ton. On February 5, the price of n-butanol, a raw material for the plasticizer DBP, fell from a high level, while the phthalic anhydride market was weak and consolidating. The price of isooctanol declined weakly, leading to a decrease in the cost of DBP raw materials. PVC prices fluctuated and consolidated, and downstream demand remained sluggish. DBP production equipment experienced a slight increase in operating rates, resulting in sufficient DBP supply. DBP factory inventories were at low levels, and downstream customers showed moderate purchasing enthusiasm. Transaction prices were subject to negotiation, with DBP prices ranging from 7,800 to 8,000 yuan/ton. The DBP market remained weak and consolidating, with downward pressure persisting and upward momentum weakening, indicating a continued weak and consolidating trend for DBP.