... jewelry, plastic processing, manufactu asonic spot hot fix handle welder is a general designation for all ultrasonic welding ... ,100W,200W,300W,500WPower Adjusting: Step or continuousSwitch: handle or foot switchWorking time control: 0-999secondsHorn sonotrode Diameter ... , special bladeApplication : clothes, jewelry, plastic processing, manufacturing, auto industry ultrasonic spot hot fix handle welder