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     The advantage of double traction with flying saw is to help extrusion forming and reduce the number of mold repair, especially suitable for the first mock examination multi hole extrusion. The extruder can proceed to the next extrusion cycle without waiting for the tractor to return, greatly improving production efficiency. The flying saw system precisely cuts along the welding line of the aluminum rod joint, minimizing the amount of waste and greatly improving the yield rate. The two traction heads can be smoothly and constantly connected, effectively avoiding the formation of vibration marks on the profile. The high-speed return of the rear traction head can meet any high-speed extrusion requirements.