... : clothes, jewelry, plastic processing, manufactu asonic spot hot fix handle welder is a general designation for all ultrasonic ... welding application equipments in handing use, including the Ultrasonic hot fix machine, plastic welding machine, ultrasonic cutting machine. ... kHz,40 kHzPower: 50W,100W,200W,300W,500WPower Adjusting: Step or continuousSwitch: handle or foot switchWorking time control: 0 ...