1. IGBT as the main equipment and full bridge inverter.2. 100% load duration design, continuous operation.3. Remote control and infrared temperature measurement can be used to achieve automatic temperature control, improve the heating quality and simplify the operation of workers.4. Instead of oxyacetylene flame, it can use coke oven, salt bath furnace, gas furnace, oil furnace and other heating methods.5. Adopt frequency automatic tracking and multi-loop control.