Credit Card Reader Ultrasonic Plastic Welding Machine 1.20KHz/2000W 2. Two ultrasonics weld unit with film rolling system Credit card readerMaterial: ... without replacement increases, you can weld various plastics. 4. control time accuracy up to 0.001 seconds. 5, three ... -acid batteries, 3-inch floppy disk, U disk, SD card, CF card, USB connectors,Bluetooth. Toys,stationery: folder, album, folding ...