BEIJING (AFP) - Chinas current account surplus surged by 30 percent in the second quarter of 2010 from the same period last year, official data showed Thursday, amid strong demand for Chinese-made goods. The current account surplus the broadest measure of trade with the world reached 70.5 billion dollars in the April-June period, the State Administration of Foreign Exchange said in a statement on its website. Net inflow of direct investment into China totalled 21 billion dollars in the second quarter, the statement said. In the first half of the year, the current account surplus dropped by eight percent on year to 124.2 billion dollars, it said, after the figure fell by 32 percent in the first three months, according to official data. The current account surplus was 4.9 percent of gross domestic product in the first half, down 1.3 percentage points from the first half of 2009, the statement said. In 2009, Chinas current account surplus dropped for the first time in eight years by 35 percent year-on-year to 284.1 billion dollars as the global crisis hit exports. But exports have improved significantly this year, with the value of overseas shipments reaching a monthly record 145.52 billion dollars in July, adding pressure on the Chinese currency to appreciate. Beijing pledged in mid-June to let the yuan trade more freely against the dollar, though it ruled out sharp fluctuations in the value of the currency. Since then, the yuan has gained less than 0.6 percent against the greenback, angering US lawmakers and other critics who claim the currency is undervalued by as much as 40 percent, giving Chinese exporters an unfair advantage.