[
  {
    "nr": "214700",
    "name": "Example Mat A, 6,00 x 50 m",
    "thickness": 6.722,
    "area_weight": 0.0,
    "core_type": 0.0
  },
  {
    "nr": "000123",
    "name": "Example Leading Zero, 1,20 x 10 m",
    "thickness": 1.5,
    "area_weight": 350.0,
    "core_type": 0.0
  },
  {
    "nr": "900001",
    "name": "Example RollCalc Only",
    "thickness": 2.0,
    "area_weight": 0.0,
    "core_type": 0.0
  }
]