... Tianjin Xinze Fine Chemical Co.,Ltd 1. 25-50,50-80 2.Gas Yield: 295L/KG 3.Package ... Quality2.Reasonable Price3.Such A reliable supplier ComodityCalcium CarbideFormulaCaC2CAS NO75-20-7Standard:GB10666-2004Appearance: Grey, yellowish-brown ,black or ... 4mm,4-7mm,7-15mm,15-25mm,25-50mm,50-80mm Gas Yield:295L/KGPackage: 50KG,100KG Iron ... desulfurizer for iron and steel industry Calcium Carbide 20-50 50-80 295