On January 6, the phthalic anhydride (PA) plant of Changzhou Xinyang has a capacity of 100,000 tons. The operating rate of the manufacturer's PA plant is less than 50%, with low inventory. The PA quotation is 6,050 yuan/ton, an increase of 50 yuan/ton. PriceSeek analysis of PA, bullish-bearish score: +1. The article indicates that the operating rate of Changzhou Xinyang's PA plant is below 50%, and inventory is at a low level, leading to a price increase of 50 yuan/ton to 6,050 yuan/ton. This suggests a significant tightening on the supply side, with reduced spot market supply and insufficient inventory likely to drive up PA spot prices and strengthen market bullish sentiment. The supply tightness factor constitutes a clear positive for prices, thus a score of +1.0 is assigned, representing a moderate bullish factor.