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The deals were mainly done at premiums of $85 per tonne, with a few deals done at $83 and $84, down from $103 per tonne in the previous quarter, the sources said.
Japan is Asia's biggest importer of aluminium and the premiums <PREM-ALUM-JP> for primary metal shipments it agrees to pay each quarter over the London Metal Exchange (LME) cash price set the benchmark for the region.
Following is a table of premiums agreed between Japanese buyers and global suppliers since 2005.