Tianjin Xinze Fine Chemical Co.,Ltd 1. 25-50,50-80 2.Gas Yield: 295L/KG 3.Package:50kg/100kg iron ... :2-4mm,4-7mm,7-15mm,15-25mm,25-50mm,50-80mm Gas Yield:295L/KGPackage: 50KG,100KG Iron DrumCapability of ... a desulfurizer for iron and steel industry Calcium Carbide 20-50 50-80 295