1. The document discusses an experimental study on the extrusion of copper rod using a commercial extrusion machine. 2. Microstructure analyses were conducted on copper samples before and after extrusion, showing more uniform and homogeneous grains after extrusion. 3. Tensile and hardness tests found that the tensile strength increased 6.8% and hardness increased 15.6% after extrusion, indicating improved material properties.