... clothes, jewelry, plastic processing, manufacturing, auto industry ultrasonic hand gun (hadle spot) welder is a general designation for all ultrasonic ... 50W,100W,200W,300W,500WPower Adjusting: Step or continuousSwitch: handle or foot switchWorking time control: 0-999secondsHorn sonotrode Diameter: ... , jewelry, plastic processing, manufacturing, auto industry ultrasonic hand gun (hadle spot) welder