March 13th Update: On March 13th, Shijiazhuang Bailong Chemical Co., Ltd. has a phthalic anhydride production capacity of 80,000 tons. The phthalic anhydride plant is operating normally, with limited inventory, primarily for internal use. The phthalic anhydride price is quoted at 8,400 yuan/ton, an increase of 200 yuan/ton. Chempricehub analysis of phthalic anhydride, long-short score: 1.5. The article reports that the phthalic anhydride price has increased by 200 yuan/ton to 8,400 yuan/ton, indicating a strong rise in spot prices. Limited inventory and the plant's primary focus on internal use suggest tight supply, with stable capacity but increased internal consumption driving up prices. Overall, this news provides a strong positive signal for the phthalic anhydride spot market, and prices are expected to maintain an upward trend in the short term.