March 9th News: On March 9th, the phthalic anhydride market in Shandong region showed a strong upward trend. The mainstream negotiated prices for phthalic anhydride from the ortho-xylene process ranged from 8,000 to 8,200 yuan per ton, while those from the naphthalene process ranged from 7,800 to 8,000 yuan per ton. The surge in crude oil prices has driven up costs, with raw materials such as ortho-xylene and industrial naphthalene experiencing significant price increases, leading to higher production costs for phthalic anhydride. Concurrently, the downstream plasticizer market has also seen a rise in prices. Phthalic anhydride manufacturers have ramped up equipment operations, resulting in an increase in the operating rate of phthalic anhydride enterprises. The market supply of phthalic anhydride remains ample, and plasticizer companies have also increased their operating loads. The rigid demand for phthalic anhydride continues to provide support, and the market outlook for phthalic anhydride remains bullish.