August exports beat analysts' expectations, but imports were well below estimates.Costfoto/NurPhoto/Getty ImagesChina's exports surged 8.7% in August, hitting a two-year high of nearly $309 billion.Despite strong exports, China's domestic demand remains weak, with imports up just 0.5%.Data suggest Chinese exporters are slashing prices to boost shipments overseas.China's exports are booming, but profits could be under pressure, recent data from the country showed.China's exports rose 8.7% in August from a year ago to nearly $309 billion — a two-year high, official data showed on Tuesday.