Why is the extruder a general worker?

Because this profession has the most basic skills. Extruder is a general worker of skilled workers, who has the most basic extrusion skills and is not competent for higher technology, so it is a general worker. Extruder mainly completes the process of blanking, blanking, punching, bending, correction, extrusion and stretching of product parts or the processing task of directly stamping and forming parts.