China stock index futures close lower Friday

China's stock index futures closed lower on Friday, with the contract for August closing 0.53 percent lower at 2,342.6 points.

The September contract, the most actively traded, lost 0.61 percent to end at 2,349.2 points. The December contract retreated 0.44 percent to end at 2,365.0 points. The contract for March 2015 contract sunk 0.12 percent at 2,392.0 points.

The stock-index contracts, agreements to buy or sell the Hushen 300 Index at a preset value on an agreed date, are designed to allow investors to bet on and profit from either gains or declines in the market.

The index futures was launched at the China Financial Futures Exchange (CFFEX) and started trading from April 16, 2010. The CFFEX has set the base value for all the four contracts at 3,399 points.