BEIJING, April 3 (Xinhua) -- China's ten-year treasury bond futures opened mixed on Wednesday, with the contract for settlement in June 2019 opening at 97.285 yuan (about 14.48 U.S. dollars), unchanged from Tuesday's close.

The contract for settlement in September 2019 opened higher at 96.95 yuan. The contract for settlement in December 2019 opened 0.05 percent lower at 96.710 yuan.

The contracts are agreements to buy or sell treasury bonds at a predetermined price on a set date. They allow investors to bet on and profit from the movements in the value of the bonds.

The treasury bond futures were launched at the Shanghai-based China Financial Futures Exchange and started trading on March 20, 2015.