February 4th News: On February 4th, the market price of phthalic anhydride in the Jiangsu region experienced a fluctuating decline. The mainstream negotiation price for ortho-xylene-based sources ranged from 6,000 to 6,200 yuan per ton, while naphthalene-based sources were mainly negotiated between 5,550 and 5,900 yuan per ton. Phthalic anhydride manufacturers maintained stable equipment operations, with the operating rate remaining low and steady. The domestic phthalic anhydride market had ample spot supply. The price of raw material ortho-xylene stabilized, while the price of industrial naphthalene fluctuated downward, weakening the cost support for phthalic anhydride. The plasticizer market, a downstream sector, also saw a fluctuating decline, with plasticizer enterprises maintaining stable operating loads, further reducing demand support for phthalic anhydride. Downstream industries adopted a rigid demand purchasing approach. In the later period, the phthalic anhydride market is expected to experience a weak consolidation.