... Power:2000W Welding area:170mm This is the Nylon zipper cutting test with 20KHz ultrasonics..The product configuration and characteristics:1 ... : 1. hand-held welding mode 2. automatic welding mode 3. cutting mode. 6. adoption of the internal signal output/direct and ... , 3-inch floppy disk, U disk, SD card, CF card, USB connectors,Bluetooth. Toys,stationery: folder, album, folding boxes,PP hollow ...