VEVOR Thermal Binding Machine, 500 Sheets Capacity Book Binding Machine, Thermal Book Binder 50mm Binding Thickness A3(Short Edge)/A4/A5 Document, with Infrared Optical DetectionProduct Features Simple to Use No need for punching holes, just a single button to bind. The manual clamping rail prevents paper from falling out, and the open cooling slot ensures rapid cooling. Make document binding more secure and efficient with our thermal binding machine! Time Saving Operation Equipped with PTC ceramic heating technology, reaching a high temperature of 140 Celsius. Preheating takes only 3 minutes, allowing you to bind documents