... : stainless steel, carbon steel, steel ,brass,bronze ,copper, hardened metal, precious metal , aluminum, alloys etc2) Main equipment: 39sets of CNC lathes, ... ,hardness tester, concentricity tester etc4) Surface treatment: electroplating,anodizing,polishing, powder coating,galvanized etc.5) Accuracy: Can be kept within +/-0 ... us your drawings or samples, we will reply you ASAP metal part for yoyo