... a solid surface YP-D55 28Khz Ultrasonic Hand-held Welder Handheld ultrasonic welding machines, also known as portable ultrasonic ... welding machine, portable welding machine, ultrasonic spot welding, riveting machines, ultrasonic point welder, can be used for the butt welding ... design and price, complete plastic outer skin, complete aluminum inner core, membrane switch control panel.10.We can design ...