China's industrial added value expanded 8.7 percent year on year in the first four months of 2014, official figures revealed on Tuesday. Industrial added value in April also rose 8.7 percent from a year earlier and 0.82 percent from the previous month, the National Bureau of Statistics said. China uses industrial added value to measure the business operations of designated large enterprises whose annual turnover of its main business activities surpasses 20 million yuan (3.24 million U.S. dollars). The statistics showed that the value-added output of state-owned enterprises rose 4.8 percent in the first four months from a year earlier, while joint stock companies grew by 10.1 percent. The manufacturing sector saw 9.9 percent growth in added value in the first four months, while that of the mining industry grew by 3.6 percent.