On December 1, Shandong Kailong Chemical Technology Development Co., Ltd.'s quotation for sodium dithionite is 2000 yuan/ton. The specification of sodium dithionite: application level: industrial grade; main content (calculated based on Na2S2O5), w/%, ≥: 96.5. The validity period of this quotation is 3 days. Quotation provider: Shandong Jinsheng Run Chemical Co., Ltd.