帮忙翻译一篇外贸英语函电 急用 非常谢谢！

标准翻译如下 ：
Thank you for your company May 20 sent a single inquiry, our confirmation has been received.
Based on your company's annual demand for 5,000 units, our offer is as follows:
Price: CIF London £ 100 each
Packaging: each packed with a plastic bag sewing machine
Cover: immediate protection against the letter of credit
Delivery: within 90 days of receipt of the order
The direction of your company, I guarantee, the price is based on the number of the lowest, with the disc send your company product manuals for reference. Any other questions, please let us know, our side will be pleased to assist your company.

Thank for your company in May 20 numbers send of inquiry list, we confirm have already receive.
According to the demand with 5000 set every year of your company, our report dish as follows:
Price:Each set in CIF London 100 pound
Packing:The each set sewing machine use plastics bag a packing
Pay:In time the letter of credit of confirm
Deliver goods:Receive order of in 90 days
We are to expensive department assurance and the price be with the dish to send to provide an expensive department reference up the merchandise manual according to the best price of above-mentioned amount.Such as there is other problem, please tell us, we pleasure for expensive department provide help.

Thanks for your inquiry list which you sent on May 20th, we have received it already.
Based on the demand of 5000 sets of your company, we made the offer as follows,
Price: GBP100/set, CIF London.
Packaging: Every sewing machine should be packaged in plastic bag.
Payment: Confirmed L/C by draft at sight.
Delivery: Within 90 days after we receive the order.
We can assure you that it's the lowest price based on this quantity, enclosed is the brochure of the products
Please let us know if there's any question. We are willing to offer you help.