... -80KHZ 4. Metal superficial heating is perfect This high frequency induction heating machine A. Heating (hot forging, hot fitting and ... and kitchen products, refrigerating copper fitting, lamp decoration fitting, precision mold fitting, hardware handle, eggbeater, alloy steel and steel ... can, annealed folded edge, annealed sink, stainless steel tube, tableware and cup.2. Annealing of various other metal ...