High frequency heater: 1,Low energy consumption 2,High production efficiency 3,Easy operation 4,induction heaing Technique ... to work pieces. Detail applications are stated as follows:Quench for various hardware and tools, such as pliers, wrench, hammer, ... ax, screwing tools and shear (orchard shear).Quench for various automobile and motorcycle fittings, such as crankshaft, connection rod ...