First of all this welder has no company name, no reference number, nothing but thanks to Amazon it has 1 year warranty. This product provides an output of 100 amps at 120 volts and 160 amps at 220 volts. Weld quality is good, penetration is good. I used Lincoln E6011 3.2mm welding rods and they worked great :) at 120 volts. This welder can last 10 years and you just need to protect it from dust and moisture. Simply clean the welder by blowing out the air with a vacuum cleaner every month, which prevents dust and moisture from entering and creating resistance between the components. The components used are of good quality, including the rectifier and electrolytic capacitors. There are no filler wires in this welder, but I used filler wires from another welder I had. Apparently not bad weld quality for a $200 welder