BRIEF-Shenzhen Stock Exchange Shows Block Trade Of Sangfor Technologies' Shares Involving 501.3 Mln Yuan

March 6 (Reuters) - Shenzhen Stock Exchange:

* SHOWS BLOCK TRADE OF SANGFOR TECHNOLOGIES' 2.8 MLN SHARES INVOLVING 501.3 MILLION YUAN ($72.32 million) ON MARCH 6 Source text in Chinese: Further company coverage: ($1 = 6.9313 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)