PegBio Co., Ltd. — Regulatory Filings 2010

Aug 25, 2010

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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BEIJING YU SHENG TANG PHARMACEUTICAL GROUP LIMITED 北京御生堂藥業集團有限公司 *

(Incorporated in Bermuda with limited liability)

(Stock Code: 1141)

LAPSE OF MEMORANDUM OF UNDERSTANDING

Reference is made to the announcements of the Company dated 10 May 2010 and 14 July 2010 (together the “Announcements”) in relation to the MOU entered into between Beijing YST Holdings and the Proposed Seller regarding the Possible Acquisition. Unless otherwise specified, terms used herein shall have the same meanings as defined in the Announcements.

The Board wishes to inform shareholders and potential investors that Beijing YST Holdings and the Proposed Seller had not entered into any Definitive Agreement in respect of the Possible Acquisition by 20 August 2010 and the MOU thereby lapsed on 21 August 2010.

By Order of the Board Suen Cho Hung, Paul Chairman

Hong Kong, 25 August 2010

As at the date of this announcement, the Board comprises Mr. Suen Cho Hung, Paul (Chairman), Mr. Sue Ka Lok (Chief Executive Officer), Mr. Bai Jianjiang and Mr. Chau Chung Tak as Executive Directors and Mr. Wong Kwok Tai, Mr. Weng Yixiang, Mr. Lu Xinsheng and Mr. Xiong Wei as Independent Non-executive Directors.

* For identification purpose only