... Turning machines(including CNC Turning center with milling and back machining function ),Grinding machines(including Internal,External and Centerless ... according to customers' drawings or samples.3).Materials: Stainless steel ,cold work steel ,spring steel ,aluminum alloy,brass, bronze,copper, plastic ,according ... /OD Grinding 0.002Wire-Cutting 0.002 Stainless steel cnc precision machining products