China’s unexpected surge in exports last month renewed concern from analysts at Goldman Sachs Group Inc., UBS AG and Australia & New Zealand Banking Group Ltd. (ANZ) that statistics from the nation can be unreliable. The 14.1 percent jump from a year earlier was the biggest positive surprise since March 2011, according to data compiled by Bloomberg. The increase didn’t match goods movements through ports and imports by trading partners according to UBS, while Goldman Sachs and Mizuho Securities Asia Ltd. cited a divergence from overseas orders in a manufacturing index. Smaller trade gains could signal a less ... (full story)