On October 30, Hunan Yinqiao Technology Co., Ltd.'s quote for sodium metabisulfite is 2250 yuan/ton. The specifications of sodium metabisulfite are: application grade: industrial grade; main content (calculated by Na2S2O5), ω/%, ≥: 96.5%. The validity period of this quote is 3 days. The quote provider is Jiaen Chemical (Shandong) Co., Ltd.