LME three-month copper prices, already trading at fresh year-to-date highs, could receive a further boost should existing home sales data from the US at 1400 prove bullish, as expected, says JP Morgan analyst Michael Jansen. "I think we're at a bit of a pause (but) it's still pretty bullish," he says. Adds customs data Thursday showing that China imported an all time high amount of refined copper in February, at 147,700 tons is adding to price support. Copper traded last at $6,810/ton, up 1% on the day at 7% since the start of the year.