From WSJ
BY CAROLYN CUI AND TATYANA SHUMSKY
As analysts and investors seek clues to the strength of the recent rally in commodity prices, some are taking a closer look at the copper market, where warning signs are emerging.
Copper prices have almost quadrupled after a two-year rally, largely driven by the belief that China, the world's largest copper user, has an insatiable appetite for the metal.
But Chinese buyers are now facing the double whammy of higher copper prices and the government's aggressive moves to tighten credit. Moreover, evidence has recently surfaced of previously unreported copper stockpiles, a sign that much of the purchased copper hasn't been ...
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