... Quality system certificate:ISO9001:2008 Type: Mould Products Stamping die mould Dongguan Richhong metal Co. Ltd ... Malleable iron; Tungsten steel, etc.Machining processesMetal fabrication, machining, welding, forming, shaping, punching, drilling, turning, milling, grinding, ... rolling, stamping, deep drawing, bending, spot or seam welding, spinning, forging, sand casting, die casting, investment casting ...