... Description1. Size: 2-4mm, 4-7mm, 7-15, 15-25, 25-50mm, 50-80mm, 80-120mm 2. Gas yield: 285L/KG-305L/KG ... &100kg&200kg Products name: Calcium Carbide(CaC2) Size: 2-4mm, 4-7mm, 7-15, 15-25, 25-50mm, 50-80mm, 80-120mmGas yield: 285L ... , %80-200≥ 85≤ 5≤ 150-80≥ 85≤ 5≤ 125-50≥ 85≤ 5≤ 14-25≥ 85≤ 5≤ 1 Chinese supplier of Calcium Carbide