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BRIEF-Shenzhen Exchange Filing Shows Block Trade Of Zhifei Biological Products' Shares Involving 350.3 Mln Yuan

May 15 (Reuters) - Chongqing Zhifei Biological Products Co Ltd:

* SHENZHEN STOCK EXCHANGE FILING SHOWS BLOCK TRADE OF CHONGQING ZHIFEI BIOLOGICAL PRODUCTS' 8.3 MILLION SHARES INVOLVING 350.3 MILLION YUAN ($55.14 million) ON MAY 15 Source text in Chinese: Further company coverage: ($1 = 6.3533 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)