On November 4th, Shanghai Jia'dong Malu Chemical Plant Co., Ltd.'s quotation for sodium sulfite is 2100 RMB/ton. The specification of sodium sulfite includes: grade of use: industrial grade; main content (calculated as Na2S2O5), ω/%, ≥: 96.5. The validity period of this quotation is three days. The quoting party is Shanghai Jia'dong Malu Chemical Plant Co., Ltd.