... Digital controls 4.Compact size High operating efficiency Melting Furnace machine NAP-MF-HK4 DetailsPower supply: 380V/50/60Hz ... digital display, good insulation5,100% full load, 24 hours continuous working.6,Quick temp rising, electricity saving, low melting ... maintainance. Scope of application:intermediate-frequency heating equipment for forging,bending,heated,melting,and so on.high-frequency welding ...