1. Folds A3/A4 documents, cards, photos, invitations, folders and more. Ideal for schools, businesses, government agencies and bookstores. 2. Automatic rebound function: the manual scoring machine automatically returns to its original position after each press. Low noise level provides efficient operation and a pleasant user experience. 3. Precise accuracy: double positioning plate and high precision scale ensure accurate measurements and grooves. A strong magnet at the bottom keeps the paper stable for spine and book turn line creation. Pleat depth is adjustable for individual adjustment. 4. Durable folding knife set: the crease knife set delivers clear, clean folds without bursting or edge offset. Crease line length 350mm and fold thickness 0.8mm; supports paper weights from 70-500g. 5. Use scenarios: ideal for classrooms and schools preparing handouts and class materials; offices producing reports, brochures and presentation booklets; print shops or bookstores assembling catalogs, invitations and folded materials.