A Carnet or ATA Carnet is an international customs and temporary export-import document. It is used to clear customs in 86 countries and territories without paying duties and import taxes on merchandise that will be re-exported within 12 months*. Carnets are also known as Merchandise Passports or Passports for Goods.
ATA Carnet is explained in this video ATA CArnet Video
See what merchandise is covered by ATA Carnet: Merchandise Catergories