China re-launched trade of its treasury bond futures on Friday, 18 years after banning it following irregularity cases.

The following are facts about the development of the country's treasury bond futures:

They were first introduced in 1992 on the Shanghai Stock Exchange. A total of 12 contracts were traded at the beginning.

Trading was suspended in 1995 over a scandal of illegal and excessive speculation related to the trading of a three-year-term T-bond coded "327."

On Feb. 23, 1995, eight minutes before the close of the trading day, China's then-biggest brokerage Wanguo Securities sold a huge number of contracts -- 327 -- to salvage a loss-making short position, causing multi-billion-yuan losses and bankruptcy of the company. Later that night, the Shanghai Stock Exchange nullified all of the affected transactions. Guan Jinsheng, CEO of the company, was sent to prison.

Research on treasury bond futures was not suspended though. In 2010, China launched the trading of Hushen 300 Index futures, the first financial futures. Meanwhile, China Financial Futures Exchange (CFFEX) started preparation for the resumption of trading.

In 2011, CFFEX completed the preliminary development of treasury bond futures. Mock trading started in 2012.

On July 5, 2013, the China Securities Regulatory Commission announced that its proposal to issue treasury bond futures had been approved by the State Council, or the cabinet.

On Sept. 6, transactions started on the Shanghai-based CFFEX.