... Al6061 Surface treatment: Red anodize high fit tolerance Demension: 200MM High quality parts Yunkai Service:1.We are ... machine, grinding machine processing center etc.4.Surface treatment: Against rust, zinc plated, nickel plated, chrome plated, black oxide etc.5 ... ±0.01MMQC control100% inspection before shipmentTesting&measuring equipmentCMM,CNC milling and turning, grinding, honing, lapping, projector ...