... die casting aluminum ISO certificated MOQ:1000 Aluminum cooling fin ,CPU heatsink ,radiator, CNC machining , CNC turning , CNC ... precision CNC machining, according to customers' drawings or samples.3).Materials: Stainless steel ,cold rolled steel ,spring steel , ... BS,JISProcessPrecision CNC machiningTolerance:0.005mmSurface Roughness Ra0.4-3.2SoftwarePro/E, AutoCAD ,Solid work, UG,CAD,CAMAnnual ...