BRIEF-Shenzhen Stock Exchange's unit, Euronext and Sina sign MOU

April 11 (Reuters) - Shenzhen Stock Exchange * Shenzhen stock exchange's information unit, Euronext and Sina sign MOU to jointly develop internet big data, cross-border index products - Shenzhen stock exchange Source text in Chinese: http://bit.ly/2ouK5xE Further company coverage: (Reporting by Hong Kong newsroom)