BEIJING, March 20 (Xinhua) -- China's Hushen 300 index futures closed mixed on Tuesday, with the contract for April 2018 up 0.01 percent to finish at 4,049.6 points.

The May 2018 contract lost 0.01 percent to close at 4,040 points. The June 2018 contract was up 0.07 percent to finish at 4,022 points. The September 2018 contract went down 0.03 percent to finish at 3,999.8 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 contracts at 3,399 points.