BRIEF-Shenzhen Exchange Filing Shows Block Trade Of Asymchem Laboratories' Shares Involving 239.2 Mln Yuan

Nov 21 (Reuters) - Shenzhen Stock Exchange:

* FILING SHOWS BLOCK TRADE OF ASYMCHEM LABORATORIES' 1.8 MILLION SHARES INVOLVING 239.2 MILLION YUAN ($34.00 million) ON NOV 21 Source text in Chinese: Further company coverage: ($1 = 7.0363 Chinese yuan renminbi) (Reporting by Hong Kong newsroom)