Domestic first intelligent automatic tracking frequency ultrasonic DG series. It uses high-performance microprocessor anti-interference. Realization of electronic manipulation. All welding control parameters are managed by the microcomputer. Intelligent frequency control system, eliminating the inconvenience of manual FM. Sonic overload automatic detection. Tracking real-optimal resonance point. Vibration set temperature remains the lowest point. Frequency welding head temperature changes followed. The machine automatically adjusts to run more stable.