On October 23rd, Shandong Kailong Chemical Technology Development Co., Ltd. provided a quotation for sodium metabisulfite at 1600 yuan per ton. The specifications of sodium metabisulfite include: Usage level: Industrial grade; main content (calculated by Na2S2O5), ω/%, ≥: 96.5. The validity period of this quotation is 3 days. The quoting entity is Jinan Jintianhe Chemical Co., Ltd.