... carriage 1.Materials:6000 series such as6061,6063 2.Finishes:extrusion, aging, cutting,drilling,anodize Aluminium stroller tubes extrusion1.Material ... , 2sets CNC , can cutting different angleProcessing machine:Lathe, Punching machine, Grinding machine, Milling machineCNC machine:40 setsTaiwan Gamma CNC processing center (Milling), ... design would be keep confidential . Aluminum stroller tubes extrusion