Detail information of products:
1. The maximum binding thickness is 135 sheets/340 sheets (depending on the product model and paper weight, this test parameter is 80 grams of paper)
2. The coil extrusion function ensures the perfect display of the coil forming effect
3. Measure and adjust the blank edge of the perforated top edge to ensure the binding firmness
4. The special hard material punching needle guarantees a long service life
5. Staggered perforation needles ensure perfect perforation effect
6. QSA has high flexibility and is suitable for various papers of different specifications: A5, A4, A3
