China's export growth slowed in March as manufacturers grappled with surging commodity and energy costs due to the Middle East conflict disrupting supplies, while imports logged the strongest growth in more than four years. Exports grew at their slowest pace in six months at 2.5% in U.S. dollar terms last month from a year earlier, Chinese customs data showed Wednesday, missing Reuters-polled analysts' median estimate for a 8.6% growth, and weakening from the combined 21.8% surge in the first