... system certificate:ISO9001:2008 Type: Mould Products Stamping die mould Dongguan Richhong metal Co. Ltd has long ... , shaping, punching, drilling, turning, milling, grinding, chip formatting, rolling, stamping, deep drawing, bending, spot or seam welding, spinning, ... forging, sand casting, die casting, investment casting, etc.Surface treatmentPolishing, zinc plating, ...