... Aluminum, Brass, Stainless Steel 2)Tolerance:+/-0.005mm 3)Finish: Polish, plating 4)Size:OEM 5)Sample ... & testing equipment: Projector , concentricity tester, hardness tester, roughness tester, torsion tester, tensile force tester,etc.3 ) Material: Different kinds of stainless ... optical fiber products , medical equipment, mobile phone, Camera ,gas stove, gas heater, furniture etc. cnc machined parts ...