S&S HHO supplys Oxy-hydrogen Generator for welding usage and cutting usage, different materials and thickness needs different gas output, we have 100LPH, 200LPH, 300LPH, 600LPH, 1000LPH, 1500LPH, 2000LPH, 3000LPH, 5500LPH, 6500LPH, 7500LPH, 10000LPH for choices.