Rotary die cutting machine is a die-cutting way of by using flexible die to cut out of shapes from the material. The flexible die is sticked to the magnetic cylinder. Since the magnetic cylinder is round, the matching embossing roller is also round. When the Rotary die cutting machine performs operations, the upper and lower two cylinders will be pressed together. The flexible die makes contact with the material and cuts off shapes from it. The die cutting pressure of rotary die cutting machine is relatively stable, more suitable for processing the finished product which has strict requirements for finished products, like products requiring high-speed automatic labelling.