... 5MPa 99.9% CO gas for treating fish and other gas specification: Product nameTechnical index(%) ... gas and protection gas for chemical industry, metallurgy, and electric industry.Industrial hydrogen ≥99.9GB-T3634-1995CylinderChemical industry, glasses, synthetic cut stone.Industrial carbon ... 96CylinderChemical industry, glasses, smelting, protectionCarbon Monoxide ≥99.9Q/DY01-98CylinderChemical industry, ...