... : Iron or Aluminium alloy,etc., Process : Sand Casting , Gravity Casting , Low-pressure die casting ... machining : CNC , Milling , drilling , numerical latheSurface finish : Polishing , sand blasting , heat treatment , painting , powder coating , anodizing ,ElectroplatingApplication ... , CNC machined, Lathe, Chemical etching, sandblasting, polishing & grinding, powder coating are finished inside. except ...