On October 13, Shandong Kailong Chemical Technology Development Co., Ltd.'s quotation for sodium metabisulfite is 2100 yuan/ton. The specification of sodium metabisulfite: Usage level: Industrial grade; main content (calculated as Na2S2O5), w/% ≥: 96.5. The validity period of this quotation is three days. Quoting party: Shandong Yushuo Chemical Co., Ltd.