... punching ProductsDescription1. CNC turning, milling, drilling, tapping processing, CNC precision machining service2. Material: Carbon steel, Steel alloy, stainless steel, aluminum, brass, bronze, ... operator and skilled QC. The dimensions of first parts, middle parts and final parts are must be recorded. Advantage1. Our company is ... .2. Drawing Software: Solid work, Pro/E, AutoCAD CAM cnc machine parts