====== TCRC ======

  * Treatment and Refining charges[(:ref:jong-introduction-trade-finance)]
  * negotiated between mines and refiners on a yearly basis[(:ref:jong-introduction-trade-finance)]
  * outcome of these negotiations is called the TCRC benchmark[(:ref:jong-introduction-trade-finance)]
  * increase on surplus of concentrates (buy low)[(:ref:jong-introduction-trade-finance)]
  * reference prices (Rotterdam P1020 duty-unpaid aluminium premium)[(:ref:jong-introduction-trade-finance)]