... and the firmness of bi XH-GB320 Wireless Glue Book Binding Machineit is manually-operated, electric-driven milling ... cutter for book spine, and the firmness of binding is greatly improved, and can achieve the ... it doesn't block the paper, besides, there is better side-glue to enhance the binding quality upto ... Russia, and hot weather of India. The machine can work stably for a long time under various ...