... certificate:ISO9001:2008 Type: Mould Products Stamping die mould Dongguan Richhong metal Co. Ltd has long history in ... 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, ...