SDS: Results of transactions of principal shareholders

1. Name of principal shareholder: Song Da 12 JSC

2. Name of stock held: SDS

3. Securities type: Common stock

4. Number of shares held by principal shareholders: 385,000 shares (25,67% Charter capital)

5. Number of shares to be disposed: 50,000 shares.

6. Date of transaction: From 30/07/2008 to 31/07/2008

7. Total holding following transaction and total percentage holding following transaction: 335,000 shares (22,33% Charter capital).

HaSTC

>   CAN: Trading Result of a Major Shareholder (04/08/2008)

>   +VIC: Trading result of affiliated person (04/08/2008)

>   Mekongfish: HOSE received the first listing registration document (04/08/2008)

>   VIP: Trading of affiliated person (04/08/2008)

>   SGH: Dividend Payment – Tranche I/2008 (04/08/2008)

>   AGF: Applying licensed Microsoft software (04/08/2008)

>   ASP: Explanation for business result in Q2 (04/08/2008)

>   BPC: Explanation for business result in Q2 (04/08/2008)

>   HBC: Trading Result of a Major Shareholder (04/08/2008)

>   MCP: Insider Trading (04/08/2008)