... product onto conveyer device,through pull tube Covered edge,use ultrasonic design roller welding,and cut off the band, ... 8.Automatic ultrasonic welding roller is made of high quality steel DC53,increasing the use life,and more durability. Operating ... Machinery Co.,ltd.,is located in Zengwu industrial area, Shipai town, Dongguan city. It is a professional manufacturer in automatic ultrasonic equipment ...