News on March 2: On March 2, the phthalic anhydride plant of Changzhou Xinyang has a capacity of 100,000 tons. The operating rate of the manufacturer's phthalic anhydride unit is less than 50%, with low inventory. The quoted price for phthalic anhydride is 6,550 yuan per ton, an increase of 400 yuan per ton. Prices for large orders are negotiable, and sales are normal.