Hi,
We have developed one software add-on in ERP.It was successfully tested and implemented at one client site. I want to tie up with other companies I want in india, marketing erp softwares so that our product can be sold at multiple locations and my business expands.
Please advise me how to write a introduction and proposal letter.

Regards,
US

I do apologize that no one has answered your question yet. Perhaps you have already found your answer. If you haven't then I would like to point out that the subject of how to write introduction letters comes up quite frequently on this site.

Just so your question gets an answer and so that you and others might benefit. Below, are listed some links on this site where the topic of writing an introduction letter has been the subject.

https://www.askmehelpdesk.com/technical-writing/sample-letter-introducing-upcoming-magazine-96215.html

https://www.askmehelpdesk.com/human-resources/introduction-letter-human-resources-recruitment-company-78287.html

https://www.askmehelpdesk.com/other-business-careers/introduction-letter-64801.html

https://www.askmehelpdesk.com/communication/help-introduction-letter-25876.html

https://www.askmehelpdesk.com/marketing/how-do-write-introduction-letter-104088.html

Here are also links to excellent sites for how to write introduction letters.

http://en.wikipedia.org/wiki/Introduction_letter

http://www.businessownersideacafe.com/cyberschmooz/marketingmix/3612.html

http://www.businessballs.com/introletters.htm

http://www.writinghelp-central.com/introduction-letter.html

http://www.asprotection.com.au/introduction.htm