Ultrasonic Mould (Horn,Sonotrode) Frequency coverage 15KHz~40KHz Material:Steel, aluminum,titanium ... Round shape.2. Material: steel, aluminum, titanium3. High precision Ultrasonic welding horn(mould,Sonotrode) with special design,any size, ... fields: Widely used in Ultrasonic plastic welding machine, non woven fabric making machine, zipper making machine,and paper cup making machines,etc ...