China's Ministry of Finance (MOF) will float 20-year book-entry treasury bonds with a total par value of 28 billion yuan (4.1 billion U.S. dollars) Thursday, the ministry said.

The bonds will have a fixed annual interest of 3.96 percent, to be paid every April 15 and Oct. 15 until 2030, according to a statement released on the website of MOF Wednesday.

The statement gave no details on the number or denominations of the bonds.

Book-entry bonds are the bonds recorded in the investors' securities accounts called book entries. They can be traded on the open market, and their market prices can deviate from par value.