... 0.01mm tolerance 4.QC inspect after products finished 5.Steel A:certification: ISO9001:2008B.Products Available bolts, ... parts, electronic parts, etc.C.Advantage1. Competitive price with good quality 2. Low MOQ (100pcs is even acceptable ... ), C28000(CuZn40)4. Bronze: C51000, C52100, C54400, etc.5. Iron: 1213, 12L14,1215 etc.6. Aluminum: Al6061, ... as required metal mobile phone part for touch screen