** logo material: paper
** process: 4C CMYK offset printing
** lamination: shiny
** attachment: metal or plastic brooch pin
** back text: can be print when need
** packing: 1pc/poly bag, 50pcs in big bag
** OEM design are welcome
** artowrk requirement: 250 dpi resolution in Adobe Illustrator or Photoshop or CorelDraw format