Special welding machines for plate welding. We offer Polyfusion Sheet Welders in the following models: Polyfusion 1-25, Polyfusion 2-25, Polyfusion 2-50, Polyfusion 2-100, Polyfusion 3-30 CNC, Polyfusion 3-50, Polyfusion 4-30 and Polyfusion 4-50. See the technical specifications here.