... drawings or samples.3).Materials: Stainless steel ,cold work steel ,spring steel ,aluminum alloy,brass, bronze,copper, plastic ,according to customer ... coating and painting according to customer's requirements.5).High quality control.100% inspection before shipping.Measuring tool:CMM,Projector ... .005Grinding0.002ID/OD Grinding 0.002Wire-Cutting 0.002 High quality aluminum CNC machining precision parts