After the cross cutting of HDP CS Cutter, firstly spray gluing on the side of the cutted 4, 6 or 8-page signatures, with the dual star wheel turning and stacking, in one stacking cycle, several book blocks are delivered and pressed. HDP DSD Dual Star Wheel Delivery guarantee non-stop production at 200 m/min with over 550 output cycles per hour for book blocks making. The system is characterized by modularity and flexibility coupled with simple and safe handling for further processing.