Copper futures advanced in London and New York on Wednesday on hopes of rising demand, but prices in Shanghai fell on fears of policy tightening by top consumer China.
Copper for delivery in May was up 0.52% midday Wednesday, at $4.028 per pound ($8,861 a tonne) on the Comex market in New York.
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Three-month copper on the London Metal Exchange advanced 0.5% to $8,822 a tonne, while the most-traded April copper contract on the Shanghai Futures Exchange ended down 1.9% at 65,330 yuan a tonne.