1.Stable power output 2.power and frequency are Easy to adjust 3.Energy saving4.heating speed faster 5.heating every inch igbt induction welding lathe tool welding equipment :welding coal mining tools, alloy drill bits, carbide saw blades, diamond saw blade (wheel), turbo chip, copper parts, automotive steering gear, solar heat pipe, welding and cutting nozzles1Welding equipment:About frequency ...