On September 22, Shijiazhuang Bailong Chemical Co., Ltd.'s quoted price for maleic anhydride is 6000 yuan/ton. The specifications of the maleic anhydride include: grade: premium quality; content of maleic anhydride: ≥99.5%; process: benzene oxidation method. The validity period of this quotation is 3 days. The quote provider is Jinan Aocheng Chemical Co., Ltd.