... industry, medical, analysisHigh Purity Hydrogen ≥99.999GB/T7445-95CylinderChemical industry, electronic industryHigh Purity Helium ≥99.996GB/T4844.3-1995CylinderChemical industry ... , lamp, analysisHigh Purity Oxygen ≥99.999GB/T14599-93CylinderCutting, electronic industry, analysisHigh Purity Argon ≥99.9996GB/T10624-95CylinderMulti gases mixture, ...