Publication of the letter of invitation to the 2011 Annual General Shareholders' Meeting

With reference to the resolution of the Board of Directors Meeting of Siam Makro Public Company Limited to hold the 2011 General Meeting of Shareholders on Wednesday, April 20, 2011 at 10.00 hours (the Board of Directors' Meeting of Siam Makro Public Company Limited No. 2/2011 held on April 7, 2011 unanimously resolved to change the time for the Annual General Shareholders' Meeting No. 18 from 15.00 hours to 10.00 hours) at Bu-Nga Room of Golden Tulip Sovereign Hotel Bangkok, No. 92 Rama 9 Road, Bangkapi Subdistrict, Huay Kwang District, Bangkok. To enhance the good corporate governance practice in shareholders right and equitable treatment, Siam Makro Public Company Limited has disclosed the letter of invitation to the 2011 Annual General Shareholders' Meeting together with related documents on the Company's website at www.siammakro.com from April 5, 2011 onwards ______________________________________________________________________