On October 9, Inner Mongolia Shuangxin Chemical Co., Ltd.'s bid for calcium carbide is quoted at 2500 yuan/ton. The specification of calcium carbide: grade: first-grade; gas output (at 20°C and 101.3KPa)/(L/kg) ≥: 280. The validity period of this bid is 3 days. The provider of the bid is: Inner Mongolia Shuangxin Chemical Co., Ltd.