On September 30, Tangshan Huayi Industrial Co., Ltd.'s 报价 for maleic anhydride is set at 6300 RMB/ton. The specifications of the maleic anhydride are: grade: premium quality; content of maleic anhydride: ≥99.5%; process: benzene oxidation method. The validity period of this quotation is 3 days. The provider of this quotation is Jinan Aocheng Chemical Co., Ltd.