On August 4, Fujian Guowei Jia Neng Jiao Dian Chemical Co., Ltd.'s quoted price for calcium carbide is 4000 yuan per ton. The specifications of the calcium carbide are: grade: first-grade; gas production rate (20°C, 101.3KPa)/(L/kg) ≥: 280. The validity period of this quote is 3 days. The provider of the quote is: Fujian Guowei Jia Neng Jiao Dian Chemical Co., Ltd.