On November 21, Henan Saiten Environmental Protection Technology Co., Ltd. provided a quote for sodium bicarbonate at 1400 yuan per ton. The specifications of the product include: Scope of use: food grade; total base content (as NaHCO3), w/% ≥ 98.8%. The validity period of this quote is three days. The quote provider is Henan Senti Environmental Protection Technology Co., Ltd.