Portable and Versatile: This lightweight and multi-functional document binder machine is perfect for binding documents like tender documents, insurance policies, contracts, reports, and also for DIY crafts, photo albums, and book repairs. Safe and Efficient: The auto power-off design makes binding safer. Our thermal binder shuts off automatically after 10 minutes of inactivity and 12 minutes post-preheat without operation, giving you peace of mind. Dual buzzers and infrared photoelectric detection ensure reliability working. Large Binding Capacity: Meet your office needs! Bind up to 500 sheets with a thickness of up to 50mm at once. This thermal book binder is compatible with A3, A4, and A5 paper sizes, fulfilling various document binding requirements and enhancing work efficiency. Time-Saving Operation: Equipped with PTC ceramic heating technology, reaching a high temperature of 140℃. Preheating takes only 3 minutes, allowing you to bind documents quickly. Three adjustable time settings meet different thickness needs. 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!