(211125) -- SHANGHAI, Nov. 25, 2021 (Xinhua) -- Experts of the Shanghai data transaction expert committee attend the opening ceremony of the Shanghai Data Exchange and Global Data Ecosystem Conference 2021 in east China's Shanghai, Nov. 25, 2021. The Shanghai Data Exchange was established on Thursday and began trading on the same day. A total of 20 data products were listed on the opening day, covering eight categories such as finance, transportation and communication. The first Shanghai data transaction expert committee, composed of 31 experts in the fields of legal compliance, financial transaction, data industry and data security, was also set up on Thursday. The expert committee will supervise the trading operation. (Xinhua/Fang Zhe)