The domestic price for sodium metabisulfite on November 20th is RMB 2900 per ton. The specification of sodium metabisulfite includes: Usage level: Industrial grade; main content (calculated based on Na2S2O5), ω/%, ≥: 96.5. The validity period of this quote is 7 days. The quote provider is Henan Qingmai Environmental Protection Technology Co., Ltd.