1.OEM . High accuracy, good surface finishing 2.Workmanship: tube sawing+CNC turning Solid work, Pro/E, ... , stainless steel, aluminum, brass, bronze, plastic (PVC, POM etc.)3. Surface treatment: Zinc plated, chrome/nickel plated, phosphating, heat treatment etc ... .2. Drawing Software: Solid work, Pro/E, AutoCAD CAM cnc machine parts