Tianjin Jingming Chemical Co., Ltd.'s quotation for sodium metabisulfite on December 4th is 2000 yuan/ton. The specification of sodium metabisulfite: Usage level: Industrial grade; Main content (calculated as Na2S2O5), ω/%, ≥: 96.5. The validity period of the quotation is 3 days. Quotation provider: Jinan Jinkhao Chemical Co., Ltd.