... one of the leading China co2 laser tube manufacturers and suppliers,Website:http://www.mglasermachine.com ... are made from GG17 material, composed of discharge tube, water-cooled jacket, gas storage cover and ... film on the surface;3.Electrode: CO2 laser tube generally is use cold cathode, cylindrical, cathode ... softly;4.Adjusting the laser point or rotating laser tube, to get the best output laser beam ...