MY FACTORY CAN PRODUCE ALL KINDS CALCIUM CARBIDE. LOCATED IN INNER MONGOLIA,CHINA. WE HAVE EXPORTED FOR MANY YEARS. Specifications: Origin: Inner Mongolia, ChinaCommodity: Calcium carbideFormula: CaC2Size : 120-200mm, 80-120 mm, 50-80 mm, 25-50 mm, 7-30 mm, 4-15 mm, 1-4mm EtcGas yield : 305 l/kg, 295 l/kg, 285 l/kg, 275 l/kgPacking: 50kg, 100kg, 200kg Package: New iron drum