1.Adopt infrared wave heating technology;the heating elements put inside crucible with less heat loss and high thermal efficiency. 2.Melting speed is much faster;melting 550kg zinc alloy to 420ºC just need two hours and electricity consumpation is 48KW.H,which could save much cost and time compared with tranditional resistance furnace. 3.Use high quality voltage regulator;without any PCB,the circuit failure rate is much lower 4.The crucible welded with 316 stainless steel;with longer service life and high efficiency. 5.Namometer temperature holding material could hold temperature effectively 6.Easy operation;high temperature control precision,which is more energy saving and environment friendly.