... , *.stp, *.stl, *.x-tSurface treatments:Paint, polish, silk-print, anodize, transparent surface, translucent surface, brush, rubber oil, electroplatMaterials:ABS, Polycarbonate (PC ... real! Key words : coor, industrial design, product design, product development , rapid prototype, rapid prototyping, prototyping, plastic prototyping, cnc machining, cnc machining parts, cnc ...