On January 4, Zhenjiang Liancheng Chemical Industry Co., Ltd., with a phthalic anhydride production capacity of 120,000 tons, reported normal operation of its phthalic anhydride plant. The quoted price for phthalic anhydride was 6,000 yuan per ton, representing an increase of 100 yuan per ton. PriceSeek Analysis: Phthalic Anhydride Bull-Bear Score: +1 The article indicates that the spot price of phthalic anhydride has risen by 100 yuan per ton to 6,000 yuan per ton, suggesting a tightening of market supply and demand or an increase in demand. Despite normal plant operation, the price increase reflects potential constraints in spot supply or strengthened cost support. This directly benefits spot prices and is expected to boost market confidence and trading activity in the short term. The score is +1 (moderately bullish), as the increase is significant but not extreme, and further attention should be paid to subsequent changes in supply and demand.