On December 8, Shaanxi Coal and Chemical Industry Group's bid for calcium carbide is priced at 2550 Yuan/ton. The specifications of the calcium carbide are: grade: first-grade; carbon dioxide production (20°C, 101.3KPa)/(L/kg) ≥: 280. The validity period of this bid is 3 days. The provider of this bid is Shaanxi Coal and Chemical Industry Group.