Dear Mr. Supachai Boontung
Due to the increase in raw material costs, we must unfortunately raise the cost of our merchandise to you.
We have avoided raising our prices for as long as possible, but we can no longer prolong the inevitable.
We have enclosed our new price list for your review whice goes into effect on 1 September 2013. Any orders placed between now and 1 September 2013 will be hornored at the lower prices.
We wish to thank you for your valued account and know that you will understand the necessity for this price increase.
yours very truly
Frank Staton
sales manager