1)High-frequency induction furnace,高周波感应电炉2)low frequency electric induction furance,低周波感应电炉3)intermediate frequency furnace,中周波感应电炉4)high cycle induction melting furnace,高周波感应熔炼炉5)quintuple frequency induction furance,五倍周波感应电炉6)high frequency induction furance,高加波感应电炉，高频率感应电炉