On November 21, the price for calcium carbide provided by Inner Mongolia Shuangxin Chemical Co., Ltd. is set at RMB 2500/ton. The specification of the calcium carbide includes: grade: first-grade; volumetric carbon dioxide production (20°C, 101.3 KPa) / (L/kg) ≥: 280. The validity period of this price is three days. The provider of the price information is Inner Mongolia Shuangxin Chemical Co., Ltd.