英语作文一个厂商写个另一个厂商的感谢信用到的词汇 concern,considerably,due to,weak market ,general trend ,period ,upward ,situation and suggestions ,sales up

Dear Sir
I am writing this letter to thank you for the help you provide in recent days.
I am sure more concern is certain to help increase our future cooperation. With sales up,the cost of raw materials has moved up greatly, unfortunately,the labor cost grows too.As for this situation,we have some suggestions, we have to readjust the prices.The prie list should be changed.The upward period has passed, the general trend is downward.Due to the weak market, we considerably hope to increase our cooperation. Welcome to order our products.
Your sincerly,
XXX

你直接说是2011英语三级考试作文不就行了吗？

I am writing this letter to thank you for your help and concern which is certain to help increase our future cooperation.Due to the fact that the cost of raw materials has moved up greatly and labor cost considerably,it was the weak mark that leaded to the result that my factory suffered heavy losses.During that period,the gerneral trend was downward.However,not only did you help me to readjust prices but also you suggested that I should make a new price list.Therefore,a large number of customers welcome to order our products.With your situation and suggestions,the trend changed and it is upward now because of sales up.All in all,I am thankful for your help considerably.