On December 22, Inner Mongolia Zhonglian Chemical Co., Ltd.'s quotation for calcium carbide is 2800 yuan/ton. The specifications of calcium carbide include: grade: first-grade; gas production (20°C, 101.3 KPa)/(L/kg) ≥: 280. The validity period of this quotation is three days. Quota provider: Wuhai Zhonglian Chemical Co., Ltd.