Copper premiums surged in Shanghai after import gains over the past week, but remain stable in the United States and Europe.
Arbitrage opportunities prompt higher Shanghai premiumsRotterdam market holds on steady supplies, LME price risesUS market remains stableBonded Shanghai copper premiums soar on arb opportunitiesImported cargos of electro-refined (ER) cathodes were more sought after than solvent-extraction electrowinning (SX-EW) cathodes, with Fastmarkets' copper grade A...