COMCO features two lines in both pressure gauges and welding & cutting tools. offering quality solution for global uses / clients in pressure control system and welding & cutting process. Main products: welding and cutting: welding, cutting heating torch, electrode holder, soldering iron. welding accessories, welding machine, cutting machine, welding and cutting tip and nozzles. pressure-alliedpressure regulator for oxygen, acetylene, propane. nitrogen, hydrogen, argon, co2, helium. etc. medical and house-hold type available. flowmetercommon pressure gauge; welding gauge, ammonia gauge, freon gauge, liquild-filled gauge, fire-extinguisher gauge, test gauge, tire gauge. vacuum gauge. NO complaints because comco does.