... could supply oxygen gas of purity 99%, 99.9%, 99.99% and 99.999% Pure Gases,High Purity GasesProduct ... 3-1995CylinderChemical industry, electronic industry, lamp, analysisHigh Purity Oxygen ≥99.999GB/T14599-93CylinderCutting, electronic industry, analysisHigh Purity ... .9995Q/DY03-98CylinderElectronical industry, medicalHigh Purity Acetylene ≥99.9Q/DY05-98CylinderWelding, chemical HIGH PURITY OXYGEN GAS