... Yield: 295L/KG min, Size: 1-4mm, 4-7mm, 4-15mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm, 70-100mm, 80-120mm ... Calcium Carbide for high qualitySpecification:Gas Yield: 295L/KG min,Size: 0.3-1mm ... , 1-4mm, 4-7mm, 4-15mm, 7-15mm, 15-25mm, 25-50mm, 50-80mm, 70-100mm ...