On December 2, Hunan Yinqiao Technology Co., Ltd. provided a quotation for sodium metabisulfite at 2,250 RMB/ton. The product specifications are as follows: application grade: industrial; main content (calculated based on Na2S2O5), ω/% ≥: 96.5. The validity period of the quotation is three days. The quoting entity is Jia'en Chemical (Shandong) Co., Ltd.