2011HOT Aluminum lamp cup, LED lamp cup, aluminum products Aluminum extrusion Color&Size: All Customized OEM &ODM ... machining partMaterials:Aluminum alloy, stainless steel , brassMaterial GradeGB,ASTM,AISI,DIN,BS,JISProcessPrecision CNC machiningTolerance:0.005mmSurface Roughness Ra0.4-3 ... Machining Part aluminum precision turned parts 2011HOT aluminum LED lamp cup