The part is aluminum die casting, and it have smooth surface and strong mechanical properties.
 In-House Secondary Operations to Die castings:
  Die trim or surface grind flash from die casting parting lines.
  Drill holes and thread or tap holes in die casting parts.
  Parting line and flash sanding.
  Mill surfaces in die casting parts.
  Vibratory deburr surface finish on die castings.
  Tumble deburr die castings.
  Pressure testing die castings. Aluminum die casting parts machined to customer specifications.
Outside processes to Die castings:
  Penetrant Inspection.
  Impregnation as necassary.
  Chemical film or Chem-film.
  Anodize.
  Polish.
  Burnish.
  Paint or powder coat.