... rodsThese models are widely used in electronic, instrument, medical, spinning machine, aviation, shipping, machinery industries and other fields2. Temper :T3-T8 ... , red, black, blue, and so on.5.Technique procedures:die casting ,make mould,extrusion ,CNC (milling finish),cutting,anodized6.Certificates ISO ... between Shanghai and Suzhou City of China. Extruded Aluminum Alloy round Bar Rods