... could supply industrial grade 99.99% purity argon gas for welding, welding argon gas of purity 99.9%, 99.99% and 99.999% Industrial grade ... welding pure argon gas, 99.99% purity argon gas/industrial ... East,South Asia,Oceania ect. Purity: 99.9% ,99.999%, 99.999 Working pressure: 150 barArgon (Ar) is a colorless, nonflammable, inert ...