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Aluminum extrusion is the aluminum alloy into the extrusion cylinder and apply a certain amount of pressure, so that it flows from a specific die hole, so as to obtain the required cross-section shape and size of a processing method, this extrusion processing method is low-cost, high efficiency, easy to operate, and occupies a considerable proportion of the modern industrial production system, so that aluminum extrusion has become an important basic material in the national economy.