We can supply all kinds of high purity gas, such as oxygen,argon, nitrogen, CO2, helium, etc. ProductspuritystandardunitApplicationoxygen≥99.5GB-T3863-1995bottle/cylinder Steel cutting ... , analysis Pure argon ≥99.99 GB/T4842-95Bottle Welding shielded welding, stainless steel smelting, container, steel structure manufacture, mold processing, etc. High purity argon gas