H160 75L/H Polisher Portable Oxygen Hydrogen Water Welder Flame Polishing Machine Pretty easy to use and operate Take water (Distilled water and pure water) as fuel Its electrolysis adopts series and parallel compound technique. "low working voltage, cut off automatically beyond the set voltage" design; Note: Please clean the new machine when using it for the first time. Cleaning method: put the electrolyte into the machine, take out the electrolyte after running for 3-5 hours, and then add the electrolyte again.