Calcium Carbide(CaC2) Size:1-4mm,4-25mm,25-50mm,50-80mm,80-200mm Gas yield:285L/KG-305L/KG Packing:50kg&100kg&200kg wit Calcium Carbide(CaC2)Size:1-4mm,4-25mm,25-50mm,50-80mm,80-200mmGas yield:285L/KG-305L/KGPacking:50kg&100kg&200kg wit skype:angelchina32CALCIUM CARBIDE GAS YIELD:295L/KG SIZE: 25MM-50MMProducts name:Calcium Carbide(CaC2)Size:1-4mm,4-25mm,25-50mm,50-80mm,80-200mmGas yield:285L/KG- ...