European stocks sag as China, Ukraine concerns mount
* FTSEurofirst 300 down 1.1 pct, Euro STOXX 50 down 0.9 pct
* Both benchmark indexes hit one-month lows
* Russia-exposed stocks hit again as sanctions talk builds
* Europe big winner of emerging market exodus -Amundi CIO
By Blaise Robinson
PARIS, March 12 (Reuters) - European shares fell on Wednesday, sending benchmark indexes to one-month lows, as mounting worries over China's economic growth rate and persistent tensions in Ukraine spooked investors.
Shares in big exporters were among the hardest hit, with German industrial conglomerate Siemens down 2.2 percent and BASF, the world's fifth-largest agrochemicals and seeds maker, sliding 1.9 percent.
A sharp sell-off in metals prices - with copper sinking to levels not seen since July 2010 - also rattled investors. The metal usually reflects the world's economic health due to its broad industrial uses, which range from construction to electricity supply to automobiles.
Copper's slump followed China's first domestic bond default, which has sparked worries about a possible unravelling of many Chinese loan deals which have used the metal as collateral. Continuación...