On January 28, the phthalic anhydride plant of Changzhou Xinyang has a capacity of 100,000 tons. The operating rate of the manufacturer's phthalic anhydride plant is less than 50%, with low inventory. The phthalic anhydride quotation is 6,330 yuan/ton, down by 20 yuan/ton. PriceSeek analysis of phthalic anhydride, long-short score: -1. The operating rate of Changzhou Xinyang's phthalic anhydride plant is less than 50%, and inventory is low, which should support prices due to reduced supply. However, the quotation fell by 20 yuan/ton to 6,330 yuan/ton, reflecting weak demand or bearish market sentiment dominating, putting pressure on spot prices. Considering supply and demand factors, the assessment indicates a generally bearish impact.