April 20th News: On April 20th, Tongling Chemical Industry Group's phthalic anhydride production capacity is 80,000 tons. The o-xylene-based phthalic anhydride unit is operating normally, while the naphthalene-based phthalic anhydride equipment is under shutdown for maintenance. Inventory levels are low. The quoted price for o-xylene-based phthalic anhydride is 9,000–9,100 yuan/ton, down by 100 yuan/ton. Chempricehub analysis of phthalic anhydride, Bull-Bear Score: -1. The spot price of phthalic anhydride fell by 100 yuan/ton to 9,000–9,100 yuan/ton, reflecting market supply pressure or weak demand. Although the shutdown of the naphthalene-based unit for maintenance may reduce some supply, and low inventory provides some support, the price decline indicates that bearish factors are dominant. It is expected that short-term spot prices may continue to face downward pressure.