外贸英文函电的定义及其功能

我的专业就是商务英语，函电主体是这六块，具体每部分还有细分，比较多，可以上网搜！
Business letters
1.establish business relations
2.enquiry.offer and counter-offer
3.conclusion of business
4.terms of payment
5.shipment and insurance
6.complaint and claim

商务英语函电翻译，急急急急！！！！

1, we have received your 2007 9.13 Chinese green tea on offer letter, thank you for your offer.2, the price you quoted is that we have received, we can not but express regret can not写不下了

Dear sirs, Thank you for your counter offer of September 13,2007 for Chinese green tea. We regret we find it difficult to comply with your request of reducing the price by 10%. Our price is resonable and it will be unprofitable for us if we cut it by 10%. So we hope you will give a second thought to it and have this business concluded on the basis of mutual benefits. Yours faithfully,