Kangofu was a tally or trading license issued by the Ming dynasty and used in trade, such as the Ming-Japanese trade, to confirm authorized tribute and trade ships between the Ming dynasty and a tributary state.
勘合符(かんごうふ)は日明貿易等に用いられた、明と朝貢国間の正式の来貢、通交船であることを証明する明が発行した割符。