Dear Khun Nathasit
Apologize for short notice but i will have to attend an important meeting
May I propose to reschedule Preventive Maintenance between 26-28 august 2015
move to 31 august 2015 to 2 September 2015.
Sorry for any inconvenience this may cause. Please do not hesitate to contact me for any assistant. I am always at your service.
Best regards,