... operation Safe, stable and reliable Welding a solid surface YP-D45 28Khz Ultrasonic Hand-held Plastic Welding Machine Used in spot ... -saving advantages.Feature1.Efficiency: The welding process is very fast ,welding time is only 0-999 seconds.2.Strength: Can ... hairdryer, steam iron water tank, electric kettle air-hsiang, computer, etc Stationery, daily necessities stationery, aquarium ruler, the raphe ...