China's exports jumped by 46 per cent in February compared with a year ago, raising hopes of a strong recovery in global trade.The increase was higher than analysts' expectations of a rise of between 35% and 40%. It is likely to increase pressure on the Chinese government to raise the value of the Yuan, which the US in particular complains is undervalued.China's imports also rose strongly by 44.7 per cent last month. The big growth in imports was helped by the government's economic stimulus spending. The rise in imports reduced China's trade surplus to a one-year low of 7.6 billion dollar for February.