... .Twenty years working experience. 2.Metal stamped part, custom-made part, unique design 3.Mould supplied 4.Sample ... Tungsten steel, etc. 2. Machining processes: Metal fabrication, machining, welding, forming, shaping, punching, drilling, turning, milling, grinding, chip ... , rolling, stamping, deep drawing, bending, spot or seam welding, spinning, forging, sand casting, die casting, investment casting, ...