Principles:    Under the action of electromagneticfield, the positive charge of the workpiece is activated and moves in highspeed. The friction of activated intrinsic molecular generates heat and meetthe requirement of the welding under a certain pressure. Features:    A. High output power, oscillatorfrequency is comply with international industrial band, which ranges from27.12MHz to 40.68MHz. All control device and certain electronic circuit can notonly help to avoid the improper operation, but to weld the product in thequickest time and ensure the product quality.    B. Spark protection device withultra-sensitive will cut the heating circuit when there is spark, which helpsto reduce the damage of machine part and workpiece. Application Areas:    1) Electrical appliance (ammeter,circuit breaker, TV shell, etc.)    2) Automotive parts (intakemanifold, car lights, turbocharger, etc.)