Calender: The calender is a kind of equipment which can change the original physical shape of the extruded object by extrusion deformation through the calender roller. It is mainly composed of feeding position, calender roller and so on. The precision calender has not only the main parts and equipments of the common calender, but also the metal fading device, which improves the physical properties of the calendered articles and the device which guarantees the calendering precision.