... the surface Product No./NameJJ-00084 / CNC precision prototype part Manufacture Process1) Drawing/model/design analysis2) CNC rapid prototype machining3) Surface treatment: Trimming, polishing, ... , Zamak 4, Zamak 5, Zamak 12; Aluminum 6061, 6063, 7075; (Plastic: ABS, PC, PS, PP, PVC, TPR, TPU, TPE, HDPE, ... etc...6) Tolerance: +/- 0.0005inch, also accord with GB6414 CNC precision prototype part