您好,原文更像是一封商务邮件.以下为本人按要求写的作文,请参考:
To whom it may concern,
I am writing to inform that due to the rise of steel material prices, we determine that the sales price for your company will be increased by 5% from next month. The price for the former orders will remain the same.
We appreciate your understanding and we look forward to a delightful cooperation with you.