On October 19, Hunan Yinqiao Technology Co., Ltd.'s quotation for sodium metabisulfite is 1700 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 three days. Quotation provider: Guangzhou TianYue Chemical Co., Ltd.