Now appear in our society these devices are constantly improved, at the same time there are also a lot of new-fangled device appear on our society, before the extruder development in our society, but still less from the eye Since our extruders appeared after saving it occupies in the development of our society increasingly important role, and we are now saving extruder in the development of our society is very good. Throughout the plastics machinery industry, the extruder pick it over as one of the important species, has an indispensable position in the market, accounting for 31% energy saving extruder plastic machinery of GDP, with its explicit function, has special production process of large-scale decisive contribution. So the development of these devices in our society are constantly improved and updated, as our business we have to keep up the pace of development of these devices.