A4 Size High Quanlity Desktop Wireless Fully-auto Hot Melt Glue Book Binding Machine for Office W2028P156657Max binding length: 320mm Max binding thickness: 40mm(about 350 to 400pages of A4) Binding speed: about 250books hour Glue melting time: about 15 20mins Back milling system: Sun knife+Small milling cutter Glue temperature: 145 180C Power watt: 220V 50Hz 1150W Item code: W2028P156657 Adhesive Bingding: Semi Automatic Binding Gumming Way: Automatic Square Angle with scale adjustment: Manual Vacuum Filter Device: Paper Dust Collection and Smoke