March 4th News: On March 4th, Tongling Chemical Industry Group's phthalic anhydride production capacity is 80,000 tons. The ortho-xylene-based phthalic anhydride (OPA) plant is operating normally, while the naphthalene-based phthalic anhydride (NPA) equipment is undergoing shutdown maintenance. Inventory levels are low. The OPA price is quoted at 6,600 yuan/ton, an increase of 100 yuan/ton. Chempricehub analysis of phthalic anhydride: Bullish-Bearish Score: 1. The OPA price has risen by 100 yuan/ton to 6,600 yuan/ton, with low inventory levels. The shutdown maintenance of NPA equipment has led to reduced supply, driving up spot prices. Overall supply is tight, demand remains stable, which is favorable for the spot market.